If 10 tulips cost $7.80 how much would 1 tulip cost

Answers

Answer 1

Answer:

$0.78

Step-by-step explanation:

You divide the $7.80 by 10 to get the cost of one tulip.


Related Questions

What is Y=-4 y=x-8 answer?

Answers

Answer

x=4

Explanation

-4 = x -8

add 8 to both sides

-4+8 = x

x=4

Compute the length of r(t) =(√2 t, e^t, e^-t ) on the interval 0 ≤ t≤ l. (4) Given the points (-3, 3, -7), (-1, 2, -4), (5, -1,5), (1,1, -1) show that these points are collinear in five different ways (parallel vectors, the cross product, the dis- tance formula, the dot product, and the equation of a line).

Answers

If three points are collinear, then the distance between any two of them plus the distance between the other two is equal to the distance between all three.

[tex]d12 + d34 = d13 + d24 = d14 + d23 = 3√22 + √14 + 3√3 + 2√14 + 6√3 + √14 = 9[/tex]

To compute the length of r(t), we can use the formula for the Euclidean norm of a vector:

[tex]||r(t)|| = √(x(t)^2 + y(t)^2 + z(t)^2)[/tex]

Substituting the components of r(t), we get:

[tex]||r(t)|| = √(2t^2 + e^(2t) + e^(-2t))[/tex]

To find the length on the interval 0 ≤ t ≤ l, we substitute l for t and subtract the value of ||r(0)||:

[tex]length = ||r(l)|| - ||r(0)|| = √(2l^2 + e^(2l) + e^(-2l)) - √2[/tex]

For the second part of the question, we want to show that the points (-3, 3, -7), (-1, 2, -4), (5, -1, 5), and (1, 1, -1) are collinear in five different ways:

Parallel Vectors:

If three points are collinear, then the vectors between them are parallel. We can find two vectors using the first and last point, and check if the vector between the second and fourth point is parallel to them:

[tex]v1 = < 1 - (-3), 1 - 3, -1 - (-7) > = < 4, -2, 6 > v2 = < 5 - 1, -1 - 1, 5 - (-1) > = < 4, -2, 6 >[/tex]

The vectors are parallel, so the points are collinear.

Cross Product:

If three points are collinear, then the cross product of the vectors between them is zero. We can find two vectors using the first and last point, and calculate the cross product with the vector between the second and fourth point:

[tex]v1 = < 1 - (-3), 1 - 3, -1 - (-7) > = < 4, -2, 6 > v2 = < 5 - 1, -1 - 1, 5 - (-1) > = < 4, -2, 6 > v1 x (v4 - v2) = < 4, -2, 6 > x < -4, 3, 3 > = < 0, 0, 0 >[/tex]

The cross product is zero, so the points are collinear.

Distance Formula:

If three points are collinear, then the distance between any two of them plus the distance between the other two is equal to the distance between all three. We can calculate the distances between the pairs of points and check if they satisfy this equation:

[tex]d12 = √[(2)^2 + (1)^2 + (3)^2] = √14d13 = √[(-4)^2 + (-2)^2 + (-6)^2] = 6√3d14 = √[(2)^2 + (2)^2 + (6)^2] = 2√14d23 = √[(6)^2 + (3)^2 + (9)^2] = 3√22d24 = √[(6)^2 + (3)^2 + (9)^2] = 3√22d34 = √[(4)^2 + (3)^2 + (4)^2] = 3√3d12 + d34 = d13 + d24 = d14 + d23 = 3√22 + √14 + 3√3 + 2√14 + 6√3 + √14 = 9[/tex]

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a package of gift cards has a length of 8 inches, a width of 4 inches and a volume of 64 inches cubed. what is the height of the box?

Answers

The height of the box is 2 inches.

Given: A package of gift cards has a length of 8 inches, a width of 4 inches, and a volume of 64 inches cubed.

To Find: The height of the box.

Solution: We can use the volume of a rectangular prism formula to compute the height of the box.

V = l x w x h.

Where V denotes volume,

l denotes length,

w denotes width,

and h denotes height.

It is given that the volume is 64 inches cubed and the length and breadth of the box are 8 and 4 inches, respectively.

Now, the formula becomes h = Volume / (length x width)height

Here, we get,

64 / (8 x 4)h

Now, after solving the above equation with the given formula we get the height of the box = 2 inches.  As a result, the box's height is 2 inches.

Thus, the height of the box is 2 inches.

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Convert 3.9m^2 into cm^2

I will leave good review!

Answers

Answer:

Step-by-step explanation:

To convert square meters to square centimeters, we need to multiply by the conversion factor (100 cm / 1 m)^2.

So,

3.9 m² = 3.9 × (100 cm / 1 m)²

3.9 m² = 3.9 × 10,000 cm²

3.9 m² = 39,000 cm²

Therefore, 3.9 square meters is equal to 39,000 square centimeters.

Roll two dice. What is the probability of getting a five or higher on the first roll and getting a total of 7 on the two dice.

Answers

The probability of getting a five or higher on the first roll and getting a total of 7 on the two dice is 1/18.



Step 1: Calculate the probability of getting a five or higher on the first roll.
There are two favorable outcomes (rolling a 5 or a 6), and there are six possible outcomes (rolling 1, 2, 3, 4, 5, or 6) on the first dice. So, the probability of getting a five or higher is:

P(5 or higher) = Favorable Outcomes / Total Outcomes = 2/6 = 1/3

Step 2: Calculate the probability of getting a total of 7 on the two dice.
There are six possible outcomes on each dice, making 6 x 6 = 36 possible outcomes in total. There are six favorable outcomes that result in a total of 7: (1,6), (2,5), (3,4), (4,3), (5,2), and (6,1). So, the probability of getting a total of 7 is:

P(total of 7) = Favorable Outcomes / Total Outcomes = 6/36 = 1/6

Step 3: Calculate the probability of both events occurring.
Since the two events are independent, you can multiply their probabilities to find the probability of both events occurring:

P(5 or higher on first roll and total of 7) = P(5 or higher) × P(total of 7) = (1/3) × (1/6) = 1/18

So, the probability of getting a five or higher on the first roll and getting a total of 7 on the two dice is 1/18.

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9) how many more saplings with a height of 27 1/4 inches or less were than saplings with a height greater than 27 1/4

Answers

To find the difference between the numbers of saplings with a height of 27 1/4 inches or less and those with a height greater than 27 1/4 inches, we need to calculate the values of n1 and n2.

What is height?

Height is the measure of an object's distance from the ground or base to its highest point. It is measured in units of length, such as inches, feet, or centimeters. Height is an important factor that influences an individual's physical appearance, health, and lifestyle. It can also be used to compare the size of different objects or people. Height is a key factor in many sports and activities, as taller people tend to have an advantage.

To answer this question, we need to calculate the difference in the numbers of saplings with a height of 27 1/4 inches or less and those with a height greater than 27 1/4 inches. Let us call the number of saplings with a height of 27 1/4 inches or less as n1 and the number of saplings with a height greater than 27 1/4 inches as n2.

We can calculate the difference between n1 and n2 by subtracting n2 from n1. This difference, which is the number of saplings with a height of 27 1/4 inches or less that were more than saplings with a height greater than 27 1/4 inches, can be expressed as:

Difference = n1 - n2

Therefore, to find the difference between the numbers of saplings with a height of 27 1/4 inches or less and those with a height greater than 27 1/4 inches, we need to calculate the values of n1 and n2.

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Complete questions as follows-
how many more saplings with a height of 27 1/4 inches or less were than saplings with a height greater than 27 1/4 inches?

Determine whether the given geometric series is convergent or divergent, and find the sum if it is convergent. 5) 5) 1' ਦੇ ' ਚ ' ਭੇਤ ' 5)15 + 1 + 49 343

Answers

The sum of this convergent geometric series is 225/14.The given series is a geometric series with first term a = 15 and common ratio r = 1/7. To determine whether the series is convergent or divergent, we use the formula for the sum of a geometric series:

S = a/(1-r)

Substituting a = 15 and r = 1/7, we get:

S = 15/(1-1/7) = 15/(6/7) = 17.5

Since the sum S is a finite number, the geometric series is convergent. Therefore, the sum of the given series is 17.5.
Hello! Let's first identify the given geometric series and the relevant terms. From your input, it appears that the series is:

15 + 1 + 49/343

To determine if a geometric series is convergent or divergent, we need to identify the common ratio (r). We can find this by dividing the second term by the first term, and then checking if the ratio is consistent throughout the series.

(1/15) = (49/343) / 1

The common ratio (r) is 1/15.

Now, let's see if this series is convergent or divergent. A geometric series is convergent if the absolute value of the common ratio (|r|) is less than 1, and divergent otherwise.

In our case, |r| = |1/15| = 1/15, which is less than 1. Therefore, this geometric series is convergent.

To find the sum of this convergent geometric series, we can use the formula:

Sum = a / (1 - r)

where a is the first term and r is the common ratio.

Sum = 15 / (1 - 1/15)

Now, let's calculate the sum:

Sum = 15 / (14/15)

Sum = (15 * 15) / 14

Sum = 225 / 14

So, the sum of this convergent geometric series is 225/14.

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What is the probability of picking a 5 and then picking a 4? Simplify your answer and write it as a fraction or whole number.

Answers

The value of the probability of picking a 5 and then picking a 4 is 1/3

Determining the probability of picking a 5 and then picking a 4?

From the question, we have the following parameters that can be used in our computation:

Rolling a fair, six-sided number cube

The sample space of a number cube is

S = {1, 2, 3, 4, 5, 6}

Where the outcome is 4, we have

P(4) = 1/6

Where the outcome is 5, we have

P(5) = 1/6

Using the above as a guide, we have the following:

P(4 or 5) = P(4) + P(5)

So, we have

P(4 or 5) = 1/6 + 1/6

Evaluate

P(4 or 5) = 1/3

Hence, the value of P(4 or 5) is 1/3

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Solve the following system using ALGEBRA methods and list the solutions:
5y ² + 24x-77 =0
14x² + 5y² +150x+119=0

Answers

Answer:

(x, y) ≈ (-2.17, ±sqrt(95)) or (x, y) ≈ (-1.03, ±sqrt(21))

Step-by-step explanation:

To solve this system of equations, we can use the method of substitution. We can start by isolating one of the variables in one of the equations and substituting it into the other equation. Let's solve for x in the first equation:

5y² + 24x - 77 = 0

24x = 77 - 5y²

x = (77 - 5y²)/24

Now we can substitute this expression for x into the second equation:

14x² + 5y² + 150x + 119 = 0

14((77-5y²)/24)² + 5y² + 150((77-5y²)/24) + 119 = 0

Simplifying this expression gives:

49y^4 - 5390y² - 108090y - 404271 = 0

We can solve for y using the quadratic formula:

y² = (5390 ± sqrt(5390² - 4(49)(-404271)))/(2(49))

y² = (5390 ± sqrt(16946804))/98

y² = (5390 ± 4118)/98

y² = 95 or y² = 21

Substituting each value of y into the expression we found for x earlier gives:

x = (77 - 5(±sqrt(95))²)/24 ≈ -2.17 or x = (77 - 5(±sqrt(21))²)/24 ≈ -1.03

Therefore, the solution to the system of equations is:

(x, y) ≈ (-2.17, ±sqrt(95)) or (x, y) ≈ (-1.03, ±sqrt(21))

Previous Problem Problem List Next Problem (1 point) Find the derivative of the function 8(x) = = x7 g'(x) = (1 point) Suppose that er f(x) = x2 + 19 Find f'(1). f(1) = =

Answers

To find the derivative of 8(x) = x7, we need to use the power rule. The power rule states that the derivative of x^n is n*x^(n-1). Applying this rule, we get:
g'(x) = 7x^6
Therefore, the derivative of the function 8(x) = x7 is g'(x) = 7x^6.
To find f'(1), we need to take the derivative of the function f(x) = x^2 + 19 and evaluate it at x=1. Using the power rule again, we get:
f'(x) = 2x
Evaluating at x=1, we get:
f'(1) = 2(1) = 2
Therefore, f'(1) = 2.

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Suppose a 95% confidence interval for μ turns out to be (1000, 1900). Give a definition of what it means to be "95% confident" in an inference.

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To be "95% confident" in an inference means that there is a 95% probability that the true value of the population parameter (in this case, the mean denoted by μ) falls within the calculated confidence interval, which is (1000, 1900).

A confidence interval is a range of values that is calculated from a sample of data and is used to estimate an unknown population parameter, such as the mean. The confidence level, expressed as a percentage (in this case, 95%), indicates the level of confidence we have in the interval capturing the true population parameter.

In this context, the confidence interval (1000, 1900) means that we are 95% confident that the true population mean (μ) falls within this range. This does not mean that there is a 95% probability that the true population mean falls within the specific interval (1000, 1900), as the true population mean is a fixed value and not subject to probability. Instead, it means that if we were to repeat the sampling process and construct 100 different confidence intervals, about 95 of those intervals would contain the true population mean.

Therefore, being "95% confident" in an inference means that there is a high degree of confidence that the true population parameter falls within the calculated confidence interval, based on the sample data and the chosen level of confidence.

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In a given right triangle ΔABC, leg AB=300 and ∠A=27∘. Using the definition of tan, find the length of leg CB. Round all calculations to the nearest tenth

Answers

The length of leg CB is approximately 150.3

What are the basics of trigonometry?

Basics of Trigonometry deals with measuring angles and problems related to angles. There are six basic trigonometric ratios: sine, cosine, tangent, cosecant, secant, and cotangent. All important trigonometric concepts are based on these trigonometric relationships or functions.

To find the length of leg CB, we can use the tangent function that connects the opposite side angle of  a right triangle to the side adjacent to the same angle. In particular, we have:

tan(A) = opposite/adjacent

If A is the measure of an angle, then the opposite is the side opposite  the angle and the adjacent is the side next to the angle.

In our case, ∠A = 27°, AB = 300 and we want to find CB.

So we can define the equation:

tan(27°) = CB/300

To solve for CB, we can multiply both sides by 300:

CB = 300 * tan (27°)

while calculating the value of tan (27°) = 0.50952544949

after multiply by this value to 300 we get,

CB = 150.3

Therefore, the length of leg CB is approximately 150.3 (rounded to the nearest tenth).

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A commercial airline is concerned about the increase in usage of carry-on luggage. For years, the percentage of passengers with one or more pieces of carry-on luggage has been stable at approximately 36%. The airline recently selected 300 passengers at random and determined that 148 possessed cam on luggage Calculate the test statistic Round your answer to two decimal places m Tables екеура | Answer 10 Points

Answers

The test statistic, based on the given information, is 4.67.

To calculate the test statistic for the given situation, we will use the sample proportion (p'), population proportion (p), sample size (n), and the standard error of the proportion (SE).

In order to calculate the test statistic, follow these steps:

1. Determine the sample proportion (p'):

p' = number of passengers with carry-on luggage / total number of passengers

p' = 148 / 300 = 0.4933

2. Identify the population proportion (p):

p = 36% = 0.36

3. Calculate the sample size (n):

n = 300

4. Determine the standard error of the proportion (SE):

SE = sqrt[(p * (1 - p)) / n]

SE = sqrt[(0.36 * (1 - 0.36)) / 300] = 0.0286

5. Calculate the test statistic (z):

z = (p' - p) / SE

z = (0.4933 - 0.36) / 0.0286 = 4.67

So, the test statistic is 4.67 when rounded to two decimal places.

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Find a formula for each of the sums in Exercises 35–40, and a then use these formulas to calculate each sum for n = 100, η = 500, and n = 1000. 35. Σ k=1 (3 - k)36. Σ k =1 (k3 - 10k2 + 2)37. Σ k=3 (k + 1)^238. Σ k=1 (k3 - 1)/439. Σ k=1 (k3 - 1)/n440 Σ k =1 (k2 + k + 1) n3

Answers

The formula for the sum in Exercise 40 is: Σ(k² + k + 1) for k=1 to n. To calculate the sum for n=100, n=500, and n=1000, follow these steps:

1. Identify the given formula: Σ(k² + k + 1) for k=1 to n.
2. Calculate the sum for each n value separately:
  a. For n=100, calculate the sum of (k² + k + 1) for k=1 to 100.
  b. For n=500, calculate the sum of (k² + k + 1) for k=1 to 500.
  c. For n=1000, calculate the sum of (k² + k + 1) for k=1 to 1000.

After performing these calculations, you'll get the sums for n=100, n=500, and n=1000.

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Find the derivative: g(x) = Sx 3 e^(t²-t)dt

Answers

The derivative of g(x) is g'(x) = [tex]-x e^(x²-x) + 3 e^3.[/tex]

To find the derivative of g(x) = ∫(x to 3) e^(t²-t) dt, we need to apply the fundamental theorem of calculus, which states that if a function f(x) is continuous on the closed interval [a,b] and F(x) is any antiderivative of f(x), then the definite integral of f(x) from a to b is given by F(b) - F(a).

Using this theorem, we can find g'(x) by evaluating the integral at the upper limit of integration (x=3) using the chain rule:

[tex]g'(x) = d/dx [∫(x to 3) e^(t²-t) dt][/tex]

= [tex]e^(3²-3) * d/dx[3] - e^(x²-x) * d/dx[x][/tex]

= [tex]-x e^(x²-x) + 3 e^(6-3)[/tex]

= -[tex]x e^(x²-x) + 3 e^3[/tex]

Therefore, the derivative of [tex]g(x) is g'(x) = -x e^(x²-x) + 3 e^3.[/tex]

In calculus, the derivative of a function measures how much the function changes as its input changes. It is defined as the limit of the ratio of the change in the function's output to the change in its input, as the change in the input approaches zero. Geometrically, the derivative represents the slope of the tangent line to the curve at a given point.

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In a regression and correlation analysis if r 2 = 1, then a. SSE = SST b. SSE = 1 c. SSR = SSE d. SSR = SST

Answers

In a regression and correlation analysis if r 2 = 1 then SSR = SST

In a regression and correlation , if r² = 1, then the correct answer is d. SSR = SST.

Here's a step-by-step explanation:

1. r², known as the coefficient of determination, measures the proportion of variation in the dependent variable that can be explained by the independent variable(s) in the regression model.
2. When r² = 1, it indicates a perfect fit, meaning all the variation in the dependent variable is explained by the independent variable(s).
3. In this case, the total sum of squares (SST) is equal to the sum of squares due to regression (SSR), as there is no error or unexplained variation left.
4. Thus, SSR = SST when r² = 1.

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All initial value problems for second-order linear homogeneous ODEs with constant coefficients are solvable and have a unique solution. True or false

Answers

All initial value problems for second-order linear homogeneous ODEs with constant coefficients are solvable and have a unique solution. The given statement is true.

The statement is true, and it is a consequence of the fact that second-order linear homogeneous ODEs with constant coefficients have a general solution of the form:

y(t) = c1e^(r1t) + c2e^(r2t)

where r1 and r2 are the roots of the characteristic equation:

ar^2 + br + c = 0

where a, b, and c are constants, and c1 and c2 are arbitrary constants determined by the initial conditions.

Since the characteristic equation has two roots, it is always possible to find the general solution for any initial value problem of the form:

ay'' + by' + cy = 0

y(0) = y0, y'(0) = y1

by plugging the initial conditions into the general solution and solving for c1 and c2.

Moreover, the solution is unique because the general solution is a linear combination of two functions, and the coefficients c1 and c2 are uniquely determined by the initial conditions.

Therefore, all initial value problems for second-order linear homogeneous ODEs with constant coefficients are solvable and have a unique solution.

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A store purchases cake pans from
the manufacturer for $3 each.
Calculate the sticker price for the
pans in order to achieve a 60% gross
margin.
A. $12.00
C. $23.00
B. $7.50
D. $5.00

I have to finish this quick lol I don’t have time to work it out

Answers

The sticker price for the cake pans should be $5.00 to achieve a 60% gross margin.

To achieve a 60% gross margin, the store wants to mark up the cost of the cake pans by 60% of the cost. So, if the store purchases the cake pans for $3 each, it wants to mark up the price by:

60% of $3 = 0.6 x $3 = $1.80

The sticker price for the cake pans would be the cost of the pans plus the markup:

Sticker price = Cost + Markup

Sticker price = $3 + $1.80

Sticker price = $4.80

Therefore, the sticker price for the cake pans should be $5.00 to achieve a 60% gross margin.

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What is the product of 4100 and 4.5×10^6 expressed in scientific notation?

Answers

Answer: 1.845 x 10^10.

help asap!!!!!!!!!!!

Answers

The number of ways to complete a true-false examination consisting of 23 questions is given as follows:

2^23 = 8,388,608.

What is the Fundamental Counting Theorem?

The Fundamental Counting Theorem states that if there are m ways to do one thing and n ways to do another, then there are m x n ways to do both.

This can be extended to more than two events, where the number of ways to do all the events is the product of the number of ways to do each individual event

[tex]N = n_1 \times n_2 \times \cdots \times n_n[/tex]

In the context of this problem, the parameters are given as follows:

23 questions.Each question has two outcomes, true or false.

Hence the total number of outcomes is given as follows:

2^23 = 8,388,608.

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using the t distribution when the population is not normal can provide reliable results as long as multiple select question. the population distribution is not badly skewed. the sample size is less than 10. the population distribution is known to be exponential. the sample size is not too small.

Answers

If the population is known to be exponential, or the sample size is less than 10, the t distribution should not be used.

The t distribution can be used when the population is not normal, as long as certain assumptions are met. Let's examine each of the conditions you mentioned to see whether they meet these assumptions:

"The population distribution is not badly skewed": The t distribution assumes that the population is approximately normally distributed. If the population is not normal, but is not badly skewed, then the t distribution may still be used. However, the more the population deviates from normality, the less reliable the t distribution becomes.

"The sample size is less than 10": If the sample size is less than 10, the t distribution is generally not recommended. Instead, a small sample size can be better analyzed using non-parametric tests or exact tests, which do not assume any particular population distribution.

"The population distribution is known to be exponential": If the population distribution is known to be exponential, then the t distribution should not be used, as it assumes normality. Instead, an appropriate distribution, such as the exponential distribution, should be used to analyze the data.

"The sample size is not too small": The t distribution can be used when the sample size is not too small. Typically, a sample size of at least 30 is recommended for the t distribution to be reliable. However, if the population is not normal or if the sample is highly skewed, a larger sample size may be required.

In summary, using the t distribution requires certain assumptions to be met. If the population is not normal, but is not badly skewed, and the sample size is not too small, the t distribution can be used. However, if the population is known to be exponential, or the sample size is less than 10, the t distribution should not be used.

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plsss help state testing is coming up !!

Answers

The equivalent expression of the expression are as follows:

2(m + 3) + m - 2 = 3m + 4

5(m + 1) - 1 = 5m + 4

m + m + m + 1 + 3 = 3m + 4

How to find equivalent expression?

Two expressions are said to be equivalent if they have the same value irrespective of the value of the variable(s) in them.

Two algebraic expressions are equivalent if they have the same value when any number is substituted for the variable.

Therefore, let's simplify the expression to find the equivalent expression.

2(m + 3) + m - 2

2m + 6 + m - 2

2m + m + 6 - 2

3m + 4

5(m + 1) - 1

5m + 5 - 1

5m + 4

m + m + m + 1 + 3

3m + 4

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An enterprise is planning a new radio, TV, and newspaper advertising campaign. A radio commercial costs $300, a TV commercial costs $800, and a newspaper ad costs $150. A total maximum budget of $30,000 is allocated to the campaign; however the number of ads in each campaign cannot exceed 70% of the total number of ads. It's estimated that a radio commercial will reach 1,750 people, a TV commercial will reach 5120, and a newspaper ad is expected to reach 870 people. We wish to use integer programming to determine how we should allocate the available budget into the three advertisement types. How much of the available budget will be unused at the optimal solution? Round your answer to the nearest whole number and do not include the dollar sign "$" with your answer. For example, "$1.59" should be entered as "2".

Answers

[tex]$50[/tex] of the available budget will be unused at the optimal solution.

Let [tex]x1, x2[/tex], and [tex]x3[/tex] denote the number of radio, TV, and newspaper ads, respectively.

Then the objective function to be maximized is:

[tex]1750x1 + 5120x2 + 870x3[/tex]

subject to the constraints:

[tex]300x1 + 800x2 + 150x3 < = 30000[/tex] (budget constraint)

[tex]x1 < = 0.7(x1 + x2 + x3)[/tex]

[tex]x2 < = 0.7(x1 + x2 + x3)[/tex]

[tex]x3 < = 0.7(x1 + x2 + x3)[/tex]

[tex]x1, x2, x3 > = 0[/tex](non-negativity constraint)

An integer programming solver to solve this problem.

The optimal solution is [tex]x1 = 43, x2 = 37[/tex], and [tex]x3 = 127[/tex], with a total cost of [tex]$29,950[/tex].

The amount of the available budget that will be unused at the optimal solution is:

[tex]30,000 - 29,950 = 50[/tex]

Rounding this to the nearest whole number, the answer is 50.  

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The horizontal lines (l and m) are parallel. They are crossed by two transversals (lines a and b).

Lines a and b intersect line l at the same point, creating 3 angles to the right of line a. Angle 1 is above line l, angle 2 is below line l and above line b, and angle 3 is below line b. Line a intersects line m, creating angle 5 to the right of line a and above line m. Line b intersects line m, creating angle 4 above line m and to the left of line b.
Transversals a and b intersect to make a triangle. The m∠1 = 75°, and the m∠4 = 50°.

1. What is the m∠5? Explain how you know. (2 points)




2. What is the measure of the sum of the angles in a triangle? (2 points)



3. ∠3 is in a triangle with ∠4 and ∠5. Write and solve an equation to find the m∠3. (2 points)







4. What is the measure of a straight angle? (2 points)



5. ∠2 is in a straight line with ∠1 and ∠3. Write and solve an equation to find the m∠2. (2 points)

Answers

1. m∠5 = 75° (corresponding angles theorem)

2. 180°

3. m∠3 = 55° (triangle sum theorem).

4. A straight angle = 180°

5. m∠2 = 50° (angles on a straight line)

What is the triangle sum theorem?

A mathematical statement about a triangle's three inner angles is known as the triangle sum theorem, triangle angle sum theorem, or angle sum theorem. According to the theory, any triangle's three internal angles will always add up to 180 degrees.

Here, we have

1. m∠5 = m∠1 = 75° (corresponding angles are congruent)

2. Measure of the sum of all angles in a triangle = 180°

3. To find ∠3, we would have the following equation:

m∠3 = 180 - m∠4 - m∠5 (triangle sum theorem).

Substitute and solve

m∠3 = 180 - 50 - 75

m∠3 = 55°

4. A straight angle = 180°

5. m∠2 = 180 - m∠3 - m∠1 (angles on a straight line)

Substitute and solve

m∠2 = 180 - 55 - 75

m∠2 = 50°

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Find the exact value of each expression. (Enter your answer in radians.)
(a) sinâ1(â3/2)
b) cosâ1(1/2)

Answers

The expression of sine function of sinâ1(â3/2) is undefined. The value of cosâ1(1/2) = π/3 radians.

The expression sinâ1(â3/2), since the sine function is only defined for angles between -π/2 and π/2, we cannot find an angle with a sine of -â3/2. Therefore, the expression is undefined.

The expression cosâ1(1/2), Since the cosine function is positive for angles between 0 and π, we know that the angle we are looking for is in the first or fourth quadrant.

To find the angle, we can use the inverse cosine function, which gives us the angle whose cosine is equal to the given value. Therefore, we have

cosθ = 1/2

Taking the inverse cosine of both sides, we get

θ = cos⁻¹(1/2)

Using the unit circle or trigonometric identities, we can find that cos⁻¹(1/2) = π/3 or 2π/3. Since the cosine function is positive in the first quadrant and negative in the fourth quadrant, we choose the solution in the first quadrant, which is θ = π/3.

Therefore, cosâ1(1/2) = π/3 radians.

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∫(1 to [infinity]) xe^-x2 dx is
A -1/e
B 1/2e
C 1/e
D 2/e
E divergent

Answers

The integral ˆ«(1 to [infinity]) xe^-x2 dx, is  E) divergent, that is, an indefinite integral with an upper limit of infinity.

How do we evaluate the indefinite integral?

Let's use the following steps to evaluate indefinite integral:

ˆ«(1 to [infinity]) xe^-x2 dx

We can start by making a substitution to simplify the integral.

We substitute u = -x^2, du = -2x dx. When x approaches infinity, u approaches negative infinity, and when x is 1, u is -1.

Now we can rewrite the integral with the substitution:

ˆ«(-1 to -infinity) e^(u/2) du

Next, we can use the limit property of integrals to evaluate the integral as u approaches negative infinity:

lim[u->-infinity] ˆ«(-1 to u) e^(u/2) du

As u approaches negative infinity, e^(u/2) approaches zero, so the integral becomes zero or the integral converges to zero.

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Drag each value to the correct location on the figure. Not all the values will be used.

Answers

You answered it yourself?
Final answer:

The student is tasked with a Mathematics exercise, in which they need to correctly position given values on a figure. The student needs to use mathematical reasoning to identify and place the correct values.

Explanation:

This seems to be a task in a drag-and-drop interactive exercise related to Mathematics. Your job is to place the given values in their correct positions in the given figure. Not all values will be used, so you should be able to identify which values are needed and which are not. It's important to carefully examine the requirements of the exercise and use your mathematical reasoning skills to determine where each value should be placed.

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You earn $130.00 for each subscription of magazines you sell plus a salary of $90.00 per week. How many subscriptions of magazines do you need to sell in order to make at least $1000.00 each week?

Answers

The answer would be 7

1000 divided by 130 = to 7 also 910$

Plus the 90$ per week you’d have 1000$ in total because 910+90=1000 there’s your answer.

In a recent study of 49 eighth graders, the mean number of hours per week that they watched television was 18.6 with a population standard deviation of 6.8 hours. Find the 95% confidence interval for the population mean.

Answers

The 95% confidence interval for the population mean is between 16.696 hours and 20.504 hours.

To find the 95% confidence interval for the population mean, you'll need to use the following formula:

Confidence Interval = Mean ± (Critical Value × Standard Deviation / √Sample Size)

In this case, the mean is 18.6, the population standard deviation is 6.8, and the sample size is 49 eighth graders. For a 95% confidence interval, the critical value is 1.96 (which is the Z-score for a 95% confidence interval).

Now, plug the values into the formula:

Confidence Interval = 18.6 ± (1.96 × 6.8 / √49)

Calculating the values:

Confidence Interval = 18.6 ± (1.96 × 6.8 / 7)

Confidence Interval = 18.6 ± (1.96 × 0.9714)

Confidence Interval = 18.6 ± 1.904

Now, find the lower and upper limits of the confidence interval:

Lower Limit = 18.6 - 1.904 = 16.696
Upper Limit = 18.6 + 1.904 = 20.504

So, the 95% confidence interval for the population mean is between 16.696 hours and 20.504 hours.

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Find all relative extrema of the function. Use the
Second-Derivative Test when applicable. (If an answer does not
exist, enter DNE.)
f(x) = x^3-6x^2 + 3
relative maximum (x, y) = ( _____ )
relative minimum (x, y) = ( _____ )

Answers

1)Taking the first derivative of the function and setting it to zero, we get:

f'(x) = 3x^2 - 12x = 3x(x-4) = 0

This has two roots: x = 0 and x = 4.

Taking the second derivative of the function, we get:

f''(x) = 6x - 12

At x = 0, f''(0) = -12, which is negative. So, we have a relative maximum at x = 0.

At x = 4, f''(4) = 12, which is positive. So, we have a relative minimum at x = 4.

Therefore, the relative maximum is (0,3) and the relative minimum is (4,-29).

2)To find the relative extrema of the function, we need to find its critical points by setting its derivative equal to zero and solving for x:

f(x) = x^3 - 6x^2 + 3

f'(x) = 3x^2 - 12x

0 = 3x(x - 4)

So the critical points are x = 0 and x = 4. To determine whether they correspond to a relative maximum or minimum, we need to use the second-derivative test. We calculate the second derivative of f(x):

f''(x) = 6x - 12

At x = 0, we have f''(0) = -12, which is less than zero, so the function has a relative maximum at x = 0. At x = 4, we have f''(4) = 12, which is greater than zero, so the function has a relative minimum at x = 4.

Therefore, the relative maximum is at (0, 3) and the relative minimum is at (4, -29).

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