For each set of data, describe the shape of the

distribution and determine which measures of

center and spread best represent the data.


15. 28, 13, 23, 34, 55, 38, 44, 65, 49, 33, 50, 59,

67, 45

Answers

Answer 1

The shape of the distribution  in histogram is skewed left and mean=43.071429 and standard deviation= 15.886445 are used together to measure the center and spread of the data.

What is histogram?

A grouped frequency distribution with continuous classes is graphically represented by a histogram. It is an area diagram, and its size is proportional to the frequencies in the associated classes. Due to the base's coverage of the spaces between class boundaries, all of the rectangles in such representations are contiguous.

We can make a sideways histogram. (makes it easier if typing text, but if you are writing on paper then you don't have to make it sideways) Each row will represent a range of 10 (1st row is 10 to 19, 2nd row is 20 to 29, etc)

=> 13 23 28 33 34 38 44 45 49 50 55 59 65 67

The data looks like it is slightly skewed left (hump towards the right [down]). The mean and the standard deviation are used together to measure the center and spread of the data.

Mean = [tex]\frac{ 13+23+28+33+34+38+44+45+49+50+55+59+65+67}{14}=\frac{603}{14}[/tex] = 43.071429

Standard deviation = 15.886445

Hence the shape of the distribution  in histogram is skewed left and mean=43.071429 and standard deviation= 15.886445 are used together to measure the center and spread of the data.

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Related Questions

Find the derivative of the given function.
y= (4x² – 9x) e⁻⁴
ˣy' = ... (Type an exact answer.)

Answers

The derivative of the given function is:

y' = (8x – 9) e⁻⁴ - 16x (4x - 9) e⁻⁴

Find the derivative?

To find the derivative of the given function y= (4x² – 9x) e⁻⁴, we need to use the product rule of differentiation. The formula for the product rule is:

(fg)' = f'g + fg'

Where f and g are two differentiable functions. Applying this formula, we get:

y' = (4x² – 9x)' e⁻⁴ + (4x² – 9x) (e⁻⁴)'

The first term on the right-hand side can be simplified using the power rule and the constant multiple rule of differentiation:

(4x² – 9x)' = 8x – 9

The second term on the right-hand side requires the chain rule of differentiation. Let u = -4x, then we have:

(e⁻⁴)' = (e^u)' = e^u (-4) = -4e⁻⁴x

Substituting these results back into the expression for y', we get:

y' = (8x – 9) e⁻⁴ + (4x² – 9x) (-4e⁻⁴x)

Simplifying this expression, we get:

y' = (8x – 9) e⁻⁴ - 16x (4x - 9) e⁻⁴

Therefore, the derivative of the given function is:

y' = (8x – 9) e⁻⁴ - 16x (4x - 9) e⁻⁴

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The surface area of the square pyramid is 84 square inches. The side length of the base is 6 what is the value of x

Answers

With the surface area of the square pyramid 84 square inches and side length of the base is 6, the value of x is 4 inches, by assuming x as the slant height of the square pyramid.

Assuming that x refers to the slant height of the square pyramid, we can use the formula for the surface area of a square pyramid to solve for x:

Surface area of a square pyramid = base area + (0.5 x perimeter of base x slant height)

Since the base of the square pyramid is a square with side length 6,

the base area is 6² = 36 square inches.

The perimeter of the base is 4 times the side length, so it is 4 x 6 = 24 inches.

Substituting these values into the formula and simplifying, we get:

84 = 36 + (0.5 x 24 x x)

84 - 36 = 12x

48 = 12x

x = 4

Therefore, the value of x, the slant height of the square pyramid, is 4 inches.

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By comparison a car with one of the worst car depreciations is a BMW 7 series. In 5 years it losses 72.6% of its value. If brand new the car costs $86,000, how much will the car be worth in 8 years?

Answers

The value of the car after 8 years is given as follows:

$10,836.76.

How to define an exponential function?

An exponential function has the definition presented as follows:

[tex]y = ab^\frac{x}{n}[/tex]

In which the parameters are given as follows:

a is the value of y when x = 0.b is the rate of change.n is the time needed for the rate of change.

The parameter values for this problem are given as follows:

a = 86000, n = 5, b = 1 - 0.726 = 0.274.

Hence the function for the value of the car after x years is given as follows:

[tex]y = ab^\frac{x}{n}[/tex]

[tex]y = 86000(0.274)^\frac{x}{5}[/tex]

The value of the car after 8 years is then given as follows:

[tex]y = 86000(0.274)^\frac{8}{5}[/tex]

y = $10,836.76.

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A binomial experiment has the given number of trials n and the given success probability p.


n=10, p=0. 2



(a) Determine the probability P (2 or fewer). Round the answer to at least three decimal places.


P(2 or fewer)

Answers

The probability P(2 or fewer) is 0.678.

To find the probability of 2 or fewer successes in a binomial experiment with 10 trials and a success probability of 0.2, we can use the binomial probability formula:

P(2 or fewer) = P(0) + P(1) + P(2)

where P(0), P(1), and P(2) represent the probabilities of getting 0, 1, or 2 successes, respectively.

P(0) = (10 choose 0) * 0.2^0 * 0.8^10 = 0.1074
P(1) = (10 choose 1) * 0.2^1 * 0.8^9 = 0.2684
P(2) = (10 choose 2) * 0.2^2 * 0.8^8 = 0.3020

Therefore,

P(2 or fewer) = 0.1074 + 0.2684 + 0.3020 = 0.6778

Rounded to at least three decimal places, the probability P(2 or fewer) is 0.678.

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You saved $3 during Week 1, $6 during Week 2, $12 during Week 3, and $21 during Week 4. If the pattern continues, how much money will you save during Weeks 8 and 9 combined?

Answers

It looks like the amount of money saved is increasing by a multiple of 2 each week. So, you would save $42 during week 5, $84 during week 6, $168 during week 7, $336 during week 8, and $672 during week 9. Therefore, you would save a total of $1,008 during weeks 8 and 9 combined.

Benjamin went shopping for a new phone


because of a sale. The price on the tag was


$28, but Benjamin paid $15. 40 before tax.


Find the percent discount

Answers

The percent discount on the phone because of a sale is 45%.

To find the percent discount, we need to calculate the difference between the original price and the discounted price, and then express that difference as a percentage of the original price.

First, let's find the difference between the two prices: $28 - $15.40 = $12.60. This means that Benjamin saved $12.60 on the phone.

Now, let's find the percent discount. We can do this by dividing the savings by the original price, and then multiplying the result by 100: ($12.60 / $28) * 100 = 45%.

So, Benjamin received a 45% discount on the phone before tax. This calculation shows that the sale allowed him to save a significant amount on his purchase. It's important to compare original and discounted prices to determine if a sale provides good value.

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The table shows the amount of money raised during a car wash for charity.
Number of Cars Washed Money Raised
3 $43.50
13 $279.50
18 $405.00
Which statement is true?

A. The group raised $14.50 per car.
B. The group raised $21.50 per car.
C. The group raised $22.50 per car.
D. The relationship is not a direct proportion.

Answers

Answer:

The correct answer is D. The relationship is not a direct proportion.

We can see that the money raised is not directly proportional to the number of cars washed. For example, when the number of cars washed is doubled from 3 to 13, the money raised is not doubled from $43.50 to $87.00. Instead, it is increased by a factor of 6.5, from $43.50 to $279.50. Similarly, when the number of cars washed is increased by 5 from 13 to 18, the money raised is increased by a factor of 1.4, from $279.50 to $405.00.

This suggests that the amount of money raised is not simply a linear function of the number of cars washed. Instead, it is likely a more complex function that takes into account other factors, such as the time of day, the weather, and the location of the car wash.:

The cookies raina wants comes in packs of 6 she needs 23 of these for a party how many packs should she buy

Answers

Based on mathematical operations, since the cookies Raina wants for a party comes in packs of 6 and she needs 23 of these for the party, she should buy 4 packs.

What are the mathematical operations?

The basic mathematical operations include addition, subtraction, multiplication, and division.

In this situation, we can determine the number of packs required by finding a number that when multiplied by 6 will be close to 23.

We know that 6 x 4 equals 24, which is the closest value to 23.

The number of cookies in each pack = 6

The total number of cookies Raina needs = 23

The number of packs to buy = 4 (6 x 4 = 24)

Thus, Raina needs to buy 4 packs of the cookies to satisfy her requirement for 23 pieces.

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What is the difference in credit score between those over the age of 55 and those between 18-24 years old?

Answers

According to recent studies, there is a notable difference in credit scores between those over the age of 55 and those between the ages of 18-24.

On average, individuals over the age of 55 tend to have higher credit scores than those in the 18-24 age range. This is primarily due to the fact that older individuals have had more time to establish and build their credit history, whereas younger individuals are just starting out and may not have had the opportunity to establish credit yet.

Additionally, older individuals tend to have more stable financial situations and may have less debt compared to younger individuals who may be dealing with student loans or other types of debt.

However, it's important to note that credit scores can vary greatly between individuals, regardless of age, and there are many factors that contribute to credit score, such as payment history, credit utilization, and length of credit history.

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a strawberry field, you will find 4 plants per square foot. How many strawberry plants will you find in a square field that has a length of 208 ft (approx 1 acre )?

Answers

Answer: 832 plants

Step-by-step explanation:

If there are 4 plants for every 1 square ft the ratio is 4:1.

This tells us to multiply 208x4 giving us 832.

Add the polynomials. (5x3+x)+(3x3+8) enter the answer in the box, in standard form (highest exponent to lowest).

Answers

The sum of the polynomials (5x³ + x) + (3x³ + 8) is 8x³ + x + 8

(5x³ + x) + (3x³ + 8) can be simplified by adding the coefficients of the like terms. The like terms are 5x³ and 3x³, which can be combined to give 8x³. The single terms are x and 8, which can be combined to give 8 + x. Therefore, the polynomials add up to

8x³ + x + 8

In standard form (highest exponent to lowest), the answer is:

8x³ + x + 8

Therefore, the sum of the polynomials (5x³ + x) + (3x³ + 8) is 8x³ + x + 8 in standard form (highest exponent to lowest)

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The value of a professional basketball player's autograph rose 40% in the last year. It is now worth $350.00. What was it worth a year ago? A. $260.00 B. $250.00 C. $270.00 D. $230.00

Answers

Answer: B

Step-by-step explanation: 250 x 140% = 350

Amy borrows $1,000 on a simple interest loan. She pays an annual rate of 3. 5%. She will take 3 years to pay back the loan. How much interest will Amy pay?

Answers

The amount of interest Amy will pay over the 3 years is $105.

Simple interest is a method of calculating the interest amount on a loan or investment by multiplying the principal amount, the annual interest rate, and the time in years. In Amy's case, she borrowed $1,000 with an annual interest rate of 3.5% and will take 3 years to pay back the loan.

To calculate the interest Amy will pay, use the formula: Interest = Principal x Rate x Time

Interest = $1,000 x 0.035 (3.5% as a decimal) x 3 years

Interest = $1,000 x 0.035 x 3 = $105

Amy will pay $105 in interest over the 3 years.

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Help with problem in photo

Answers

Answer:

(x-6)²+(y+3)²=17²

Step-by-step explanation:

The equation of a circle with center (a,b) and radius r is given by the formula:

(x - a)² + (y - b)² = r²

In this case, the center of the circle is (6,-3), and it passes through the point (-9,5). To find the radius of the circle, we need to calculate the distance between the center and the point on the circle. Using the distance formula, we get:

r = √[(x₂ - x₁)² + (y₂ - y₁)²]

= √[(-9 - 6)² + (5 - (-3))²]

= √[225 + 64]

= √289

= 17

So, the radius of the circle is 17. Now we can plug in the values for the center and radius into the equation of a circle:

(x - 6)² + (y + 3)² = 17²

PLSSS HELP.


Apples are on sale at a grocery store for per pound. Casey bought apples and used a coupon for off her purchase. Her total was. How many pounds of apples did Casey buy?



Part A: Write an equation that represents the problem. Define any variables.



Part B: Solve the equation from Part A. Show all work.



Part C: Explain what the solution to the equation represents

Answers

A: An equation that represents the problem is 1.75x - 0.45 = 4.45. B: Solving the equation from Part A gives x = 2.8. C: The solution to the equation represents the number of pounds of apple bought by Casey.

Part A: Write an equation that represents the problem. Define any variables.

Let x represent the number of pounds of apples Casey bought. The cost of apples is $1.75 per pound, so the total cost before using the coupon would be 1.75x. After using the $0.45 coupon, her total was $4.45. The equation representing this situation is:

1.75x - 0.45 = 4.45

Part B: Solve the equation from Part A.

Now, let's solve the equation:

1.75x - 0.45 = 4.45

Add 0.45 to both sides:

1.75x = 4.90

Now, divide both sides by 1.75:

x = 4.90 / 1.75

x = 2.8

Part C: Explain what the solution to the equation represents

The solution, x = 2.8, represents that Casey bought 2.8 pounds of apples at the grocery store.

Note: The question is incomplete. The complete question probably is: Apples are on sale at a grocery store for $1.75 per pound. Casey bought apples and used a coupon for $0.45 off her purchase. Her total was $4.45. How many pounds of apples did Casey buy? Part A: Write an equation that represents the problem. Define any variables. Part B: Solve the equation from Part A. Show all work. Part C: Explain what the solution to the equation represents.

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Jocelyn is considering taking out one of the two following loans. loan h is a three-year loan with a principal of $5,650 and an interest rate of 12.24%, compounded monthly. loan i is a four-year loan with a principal of $6,830 and an interest rate of 10.97%, compounded monthly. which loan will have the smaller monthly payment, and how much smaller will it be? round all dollar values to the nearest cent. a. loan h's monthly payment will be $42.46 smaller than loan i's. b. loan h's monthly payment will be $140.79 smaller than loan i's. c. loan i's monthly payment will be $11.88 smaller than loan h's. d. loan i's monthly payment will be $26.98 smaller than loan h's.

Answers

Loan H's monthly payment will be $42.46 smaller than loan I's (rounded to the nearest cent). The correct option is a.

To determine which loan will have the smaller monthly payment, we need to calculate the monthly payments for both loans using the given information.

For loan H, the monthly interest rate is 12.24%/12 = 1.02%, and the number of payments is 3 years x 12 months/year = 36. Using the formula for the monthly payment on a loan with monthly compounding, we have:

P = (r(PV))/(1 - (1+r[tex])^{(-n)})[/tex]

where P is the monthly payment, r is the monthly interest rate, PV is the principal value of the loan, and n is the total number of payments.

Plugging in the values given for loan H, we get:

P = (0.0102 x $5,650) / (1 - (1+0.0102)⁻³⁶) = $186.25

For loan I, the monthly interest rate is 10.97%/12 = 0.9142%, and the number of payments is 4 years x 12 months/year = 48. Using the same formula as above, we have:

P = (0.009142 x $6,830) / (1 - (1+0.009142)⁻⁴⁸) = $227.04

Therefore, the monthly payment for loan H is $186.25 and the monthly payment for loan I is $227.04.

To find the difference between the monthly payments, we subtract the monthly payment for loan H from the monthly payment for loan I:

$227.04 - $186.25 = $40.79

Therefore, the answer is (a) loan H's monthly payment will be $42.46 smaller than loan I's (rounded to the nearest cent).

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Subtract.3 1/3−5enter your answer as a simplified mixed number by filling in the boxes.

Answers

The result of subtracting 5 from 3 1/3 is -2 2/3.

To subtract 5 from 3 1/3, we need to first convert the mixed number to an improper fraction. This can be done by multiplying the whole number (3) by the denominator of the fraction (3), and adding the numerator (1) to get 10/3. Therefore, 3 1/3 is equivalent to 10/3.

Next, we can subtract 5 from 10/3 by finding a common denominator of 3, which gives 15/3 - 10/3 = 5/3. This is the result in improper fraction form.

To convert back to a mixed number, we can divide the numerator (5) by the denominator (3), which gives a quotient of 1 and a remainder of 2. Therefore, the answer is -2 2/3.

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There are 39 students in a class 22 offer maths,14 offer physics,and 16 offer biology if 5 offer both biology and math 7 offer at least one of the subject where every student offer at least one of the subjects. Find​

Answers

Where every student offer at least one of the subjects, there are 4 students who offer all three subjects.

To find the number of students who offer only one subject, we can use the formula:

number of students offering only one subject = total number of students offering the subject - number of students offering both subjects

For math, there are 22 students offering math and 5 offering both math and biology, so the number of students offering math only is:

22 - 5 = 17

Similarly, for physics and biology, the numbers of students offering the subjects only are:

14 - 7 = 7 (physics)
16 - 5 = 11 (biology)

To find the number of students offering all three subjects, we can use the formula:

number of students offering all three subjects = total number of students offering at least one subject - number of students offering only one subject in each subject + number of students offering no subject

We know that there are 7 students offering at least one subject. To find the number of students offering no subject, we can subtract this from the total number of students:

39 - 7 = 32

Now we can plug in the numbers:

number of students offering all three subjects = 7 - 17 - 7 - 11 + 32
= 4

Therefore, there are 4 students who offer all three subjects.

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The cost to produce x kilograms of whatchamacallits is given by the function C(x) = 50x + 1000 where Cix) is in hundreds of dollars. The revenue for the sale of x whatchamacallits is given by R(x) = 450x where R(x) is in hundreds of dollars. How many kilograms should be produced and sold to realize a maximum profit? What is that maximum profit?

Answers

The maximum profit will be realized by producing and selling 2.5 kilograms of whatchamacallits.

The maximum profit, in hundreds of dollars, will be $500.

To find the maximum profit, we need to first calculate the profit function P(x), which is the difference between the revenue and the cost functions:

P(x) = R(x) - C(x)
P(x) = 450x - (50x + 1000)
P(x) = 400x - 1000

To find the amount of kilograms that should be produced and sold to realize a maximum profit, we need to find the value of x that maximizes the profit function.

We can do this by taking the derivative of the profit function and setting it equal to zero:

P'(x) = 400
400 = 0

Since the derivative is a constant value, there is no critical point or inflection point. Therefore, the profit function is increasing at a constant rate, and the maximum profit will be achieved at the highest possible value of x.

To find that value, we can set the profit function equal to zero and solve for x:

P(x) = 400x - 1000 = 0
400x = 1000
x = 2.5

Therefore, the maximum profit will be realized by producing and selling 2.5 kilograms of whatchamacallits.

To find the maximum profit itself, we can substitute this value of x into the profit function:

P(2.5) = 400(2.5) - 1000 = 500

So the maximum profit, in hundreds of dollars, will be $500.

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Misty needs 216 square inches of metal



to make a yield sign. If the height of the sign is 18 inches,



how long is the top edge of the sign?






24 inches




12 inches




198 inches




22 inches


pls give explanation not just the awnser

Answers

The answer is 96 inches, which is equivalent to 8 feet.

Find out the length of the top edge of the yeild sign ?

To find the length of the top edge of the yield sign, we need to use the formula for the area of a trapezoid:

A = (b1 + b2)h/2

where A is the area of the trapezoid, h is the height, b1, and b2 are the lengths of the two parallel bases of the trapezoid.

In this case, we are given the area of the sign (216 square inches) and the height (18 inches), but we don't know the length of either base. However, we do know that the shape of a yield sign is that of a regular octagon, which means it has eight equal sides and eight equal angles.

If we draw a line from the top of the sign to the midpoint of one of the sides, we will form a right triangle with the height of the sign as one leg, half the length of the top edge as the other leg, and the length of one of the sides as the hypotenuse. We can use the Pythagorean theorem to find the length of the side:

a^2 + b^2 = c^2

where a is the height of the sign (18 inches), b is half the length of the top edge (what we are trying to find), and c is the length of one of the sides.

Since the sign has eight sides, we can divide the total area by 8 to get the area of one of the eight triangles that make up the sign. We can then use this area to find the length of one of the sides:

A = (bh)/2

216 sq. in. = (bh)/2

432 sq. in. = bh

Since the sign is a regular octagon, each of the eight triangles has the same base (the side of the octagon) and height (half the length of the top edge), so we can use this equation to solve for b:

432 sq. in. = b(18 in.)/2

b = 48 in.

Now we know that half the length of the top edge is 48 inches, so the full length of the top edge is:

2(48 in.) = 96 in.

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Suppose a homing pigeon is released on an island at point C, which is 9 mi directly out in the water from a point B on shore, Point B is 20 mi downshore from the pigeon's home loft at point A. Assume that a pigeon flying over water uses energy at a rate 1.29 times the rate over land. Toward what points downshore from A should the pigeon fly in order to minimize the total energy required to get to the home loft at A? Point S ismiles away from point A. (Type an integer or decimal rounded to three decimal places as needed.)

Answers

The pigeon should fly directly from point C to point B, then fly along the shoreline to a point 10.387 miles away from point A (rounded to three decimal places). This can be found using the principle of minimizing the total distance traveled, taking into account the different energy rates over water and land.

To minimize the total energy required for the homing pigeon to get to its home loft at Point A, we need to find the optimal point downshore, Point S, to fly to. Using the given information, we can set up a function for the total energy.

Let x be the distance from Point A to Point S. Then, the pigeon will fly x miles over land and the remaining distance, 20-x miles, downshore from Point B to Point S. The distance from Point C to Point S can be found using the Pythagorean theorem:

CS = sqrt((20-x)^2 + 9^2)

Since the pigeon uses energy at a rate 1.29 times over water compared to land, we can write the total energy function as:

E(x) = x + 1.29 * CS

Now we need to minimize this function. To do so, we can take the derivative of E(x) with respect to x and set it equal to zero:

dE(x)/dx = 0

By solving this equation for x, we will find the optimal distance downshore from Point A to Point S. Once you have the value of x, you can say that Point S is x miles away from Point A (rounded to three decimal places, as needed).

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Amanda wants to add 6732 and 4975 how can Amanda use mental math to add the numbers is Amanda answer correct explain

Answers

she can add each number one by one , and whenever she needs to carry numbers over. She can add them to the already existing numbers. she cna check with a calculator

Jennifer had 7/8 of her pan of macoroni and chese left after supper. The next day she split what was left evenly between her five kids. What fraction of the total pan did each of them get

Answers

each of Jennifer's five kids received 1/40 of the total pan of macaroni and cheese.

What is equivalent ratio?

The concept of a ratio in mathematics is the divisional comparison of two quantities, the antecedent and consequent. As an illustration, each ingredient must be added according to a ratio during cooking. So, we may argue that a ratio is employed to represent one quantity as a portion of another. The ratio can be written as a fraction as well. If the ratio a:b is a fraction, its form is a/b. As a result, it is simple to compare two or more equivalent ratios expressed as equivalent fractions.

If Jennifer had 7/8 of her pan of macaroni and cheese left after supper, this means she had 1 - 7/8 = 1/8 of the pan remaining.

To split the remaining macaroni and cheese evenly between her five kids, we need to divide 1/8 by 5.

1/8 divided by 5 can be written as (1/8) ÷ 5 = (1/8) x (1/5) = 1/40.

Therefore, each of Jennifer's five kids received 1/40 of the total pan of macaroni and cheese.

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A circle in the xy-coordinate plane has the equation

2
+

2
+
6


4
=
0
x
2
+y
2
+6y−4=0 . If the equation of the circle in written in the form

2
+
(

+

)
2
=

x
2
+(y+k)
2
=c , where k and c are constants, what is the value of k?

Answers

Answer:

Given the equation of the circle in the xy-coordinate plane as x^2 + y^2 + 6x - 4 = 0, we need to rewrite it in the form (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center of the circle and r is the radius.

Completing the square for x^2 + 6x, we get (x+3)^2 - 9. Thus, the equation becomes (x+3)^2 + y^2 - 9 = 4. Rearranging, we get (x+3)^2 + y^2 = 13.

Comparing with the required form, we get (x-h)^2 + (y-k)^2 = r^2, where h = -3, k = 0 and r^2 = 13. Thus, the value of k is 0.

HURRY PLEASE!!!!


The number of bacteria in a culture quadruples every hour. There were


65,536 bacteria in the culture at 8:00 A. M. The expression 65,536 4h models


the number of bacteria in the culture h hours after 8:00 A. M.



a. What is the value of the expression for h= -4?



b. What does the value of the expression in part (a) represent

Answers

The value of the expression 65,536 x 4h for h = -4 is 256. The value represents the number of bacteria in the culture 4 hours before 8:00 A.M.

To find the value of the expression for h = -4, we substitute -4 for h in the expression [tex]65536*4^{h}[/tex]. This gives us

65536*4⁻⁴

To simplify this, we need to evaluate the exponent first. Remember that a negative exponent means we take the reciprocal of the base raised to the positive version of the exponent. So 4⁻⁴ is the same as 1/(4⁴), or 1/256.

Substituting that back into the expression, we get

65536*(1/256) = 256

So the value of the expression for h = -4 is 256.

The value of the expression in part (a) represents the number of bacteria in the culture 4 hours before 8:00 A.M. Since h is negative, we are looking at a time before 8:00 A.M. Specifically, h = -4 means we are looking at 4 hours before 8:00 A.M., or 4:00 A.M.

So the expression 65536*4⁻⁴ tells us how many bacteria were in the culture at 4:00 A.M., assuming the bacteria quadrupled every hour from that point until 8:00 A.M.

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QUESTION IN PHOTO I MARK BRAINLIEST

Answers

The value of measure of arc QI is,

⇒ m QI = 94°

We have to given that;

⇒ m YS = 180°

⇒ m ∠QBI = 137°

Hence, We can formulate;

⇒ m ∠QBI = 1/2 (m YS + m QI)

⇒ 137 = 1/2 (180 + m QI)

⇒ 274 = 180 + m QI

⇒ m QI = 274 - 180

⇒ m QI = 94°

Thus, The value of measure of arc QI is,

⇒ m QI = 94°

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Write and simplify the integral that gives the arc length of the following curve on the given integral. b. If necessary, use technology to evaluate or approximate the integral. y = -x² -5 on [-1,2]

Answers

To find the arc length of the curve y = -x² -5 on the interval [-1,2], we use the formula to evaluate:

L = ∫√(1 + (dy/dx)²) dx

where dy/dx is the derivative of y with respect to x.

First, we find dy/dx:

dy/dx = -2x

Next, we substitute dy/dx into the formula and simplify:

L = ∫√(1 + (-2x)²) dx
L = ∫√(1 + 4x²) dx

To evaluate this integral, we can use a trigonometric substitution. Let x = (1/2)tanθ, then dx = (1/2)sec²θ dθ. Substituting, we get:

L = ∫√(1 + 4(1/2)²tan²θ)(1/2)sec²θ dθ
L = (1/2)∫sec³θ dθ

To integrate sec³θ, we use integration by parts:

u = secθ, du/dθ = secθ tanθ
dv/dθ = sec²θ, v = tanθ

∫sec³θ dθ = secθ tanθ - ∫tan²θ secθ dθ
= secθ tanθ - ∫secθ dθ + ∫sec³θ dθ

Rearranging, we get:

2∫sec³θ dθ = secθ tanθ + ln|secθ + tanθ|

Therefore:

L = (1/2)(secθ tanθ + ln|secθ + tanθ|) + C

To evaluate L on the interval [-1,2], we need to find θ when x = -1 and x = 2. Using the substitution x = (1/2)tanθ:

When x = -1, θ = -π/4
When x = 2, θ = π/3

Substituting these values into the equation for L and simplifying, we get:

L = (1/2)(2√2 + ln(3 + 2√3) + π/4)

Therefore, the integral that gives the arc length of the curve y = -x² -5 on the interval [-1,2] is:

L = (1/2)(2√2 + ln(3 + 2√3) + π/4)

Note: If technology is used to evaluate or approximate the integral, the answer may differ slightly due to rounding errors.

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Curtis loves Pokémon! He went to school on Thursday and traded a bunch of cards to get new ones. He saw Dino and traded 3 of his cards for one of Dino's. Then a girl he liked, Tippi, wanted to trade cards. He was really nice to her because he liked her, so he traded 5 of his cards for 2 of hers. He then put his cards away. When he got home he noticed that 10 of his cards were missing. He was so upset that his mom bought him another pack of 12 cards. He hid half of his cards at home and took the rest to school the next day. He traded ¼ of the cards he brought to school to Dino again and got back 3 of Dino's cards. Curtis now has 9 cards at school. How many cards did he start with? How many cards total does he have now?

Answers

Curtis started with 84 cards and now has 12 cards at home and 9 cards at school, for a total of 21 cards.

How to find cards?

To find how many card ,We see Curtis has 9 cards at school after trading with Dino again, which means he had 12 cards before the trade.

Before his mom bought him another pack of 12 cards, he had 10 missing, so he must have had 24 cards in total (12 + 12).

He hid half of his cards at home, so he has 12 cards at home.

He traded ¼ of the cards he brought to school to Dino and got back 3 of Dino's cards. Let's call the number of cards he brought to school "x".

So, he traded x/4 cards to Dino, and got back 3 cards, which means he now has (x/4) - 3 cards.

We know that he now has 9 cards at school, so we can set up an equation:

(x/4) - 3 = 9

Solving for x, we get:

x/4 = 12

x = 48

So, Curtis brought 48 cards to school, which means he started with 24 + 12 + 48 = 84 cards in total.

Therefore, Curtis started with 84 cards and now has 12 cards at home and 9 cards at school, for a total of 21 cards.

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Describe and correct the error in finding the circumference of ⊙C

Answers

Step-by-step explanation:

C= 2πr

Given,

Diameter= 9

so, radius = 9÷2 = 4.5

C= 2 x π x 4.5

= 28.3 (3.s.f)

The following data points represent the number of holes
that moths ate in each of grandma marion's dresses.
7,8,8, 5, 7,8
using this data, create a frequency table.
number of holes
number of dresses
5
6
7
8

Answers

A frequency table was created using data points representing the number of holes in each of Grandma Marion's dresses. The table shows the number of dresses with 5, 7, and 8 holes, respectively.

To create a frequency table for the given data, first, the unique values in the data set are identified, which are 5, 7, and 8. Then, the number of occurrences of each unique value is counted, resulting in the frequencies 1 for 5, 2 for 7, and 3 for 8.

Count the frequency of each data point

5: 1 dress

7: 2 dresses

8: 3 dresses

Finally, these values are organized into a table with two columns, one for the unique values and another for their corresponding frequencies. The resulting frequency table shows the number of dresses with each number of holes eaten by moths.

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