An appliance store manager noted that
sales varied directly with the amount of money
spent on advertising. If last week's sales were
$10,000 and $2000 was spent on advertising,
what should sales be during a week that $1200
was spent on advertising?

Answer: I think you can easily do this yourself :)
Look up the definition of all the answers, and it'll lead you straight to the answer :D
I remember doing algebra, and it seemed really hard, but once it's all over you'll be like "oooh it makes so much sense looking back on it"

Step-by-step explanation:

We will be sure to take your time and carefully consider the given information in order to find the missing angle and arc measures accurately.

To find the missing angle and arc measures, follow these steps:

1. Look at the given diagram to identify the angles and arcs involved.

2. Use the angle sum property of a circle to find the measure of the missing angle. This property states that the sum of the angles in a circle is equal to 360 degrees. So, if you know the measures of the other angles in the circle, you can subtract their sum from 360 to find the missing angle.

3. Use the arc angle formula to find the measure of the missing arc. This formula states that the measure of an arc is equal to the measure of its corresponding central angle. So, if you know the measure of the missing angle, you can use it to find the measure of the missing arc.

4. Check your answer by making sure that the sum of all the arc measures in the circle is equal to the circumference of the circle.

Overall, be sure to take your time and carefully consider the given information in order to find the missing angle and arc measures accurately.

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The angle of depression from the man to the building below is approximately 39.81°.

To find the angle of depression from the man to the building below, we'll use the tangent function and the given information.

Given:
- The man is 40,000 feet away from the building horizontally.
- The man's altitude is 33,000 feet.

Step 1: Identify the opposite and adjacent sides in relation to the angle of depression.
- The opposite side is the altitude (33,000 feet).
- The adjacent side is the horizontal distance (40,000 feet).

Step 2: Use the tangent function to find the angle of depression.
tan(angle) = opposite/adjacent
tan(angle) = 33,000/40,000

Step 3: Find the inverse tangent of the ratio to get the angle.
angle = arctan(33,000/40,000)

Step 4: Calculate the angle.
angle ≈ 39.81°

The angle of depression from the man to the building below is approximately 39.81°.

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AnswerAnswer:

Step-by-step explanation:

To determine the materials cost for the brooch, we need to know the area of each material used in the brooch. Let's say that the brooch is made up of a 5 cm x 5 cm square of silver, a 2 cm x 2 cm square of copper, and a 3 cm x 1 cm rectangle of stone.

The area of the silver sheet is 5 cm x 5 cm = 25 cm^2, so the cost of the silver is 25 cm^2 x $9.75/cm^2 = $243.75.

The area of the copper sheet is 2 cm x 2 cm = 4 cm^2, so the cost of the copper is 4 cm^2 x $3.25/cm^2 = $13.

The area of the stone is 3 cm x 1 cm = 3 cm^2, so the cost of the stone is 3 cm^2 x $1.75/cm^2 = $5.25.

Therefore, the total materials cost for the brooch is $243.75 + $13 + $5.25 = $262.

Answer: I believe the answer would be 38/5x - 3

The minimum value of a - b is around 2.2 with a = 8.4 rounded to one decimal place and b = 6.19 rounded to two decimal places.

We must first subtract b (lower bound) from a (upper bound) to determine the least value of a - b, which is equal to 8.4 - 6.19 = 2.21. 2.21 is the difference between a and b. However, the question requests that we round off this number to the nearest tenth.

We remove the first decimal point because 1 is

less than 5, giving us 2.2. Hence the minimum value of a -b to the nearest decimal is found to be 2.2.

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The complete question is:

Given a = 8.4 rounded to 1 decimal place and b = 6.19 rounded to 2 decimal places, find the minimum value of a - b rounded to 1 decimal place.

The function that represents the profit p for selling b bracelets is p = 3.5b - 84

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

This means that

Cost of b brackets = 3.5b

So, we have

Profit = Cost of b brackets - Cost price

substitute the known values in the above equation, so, we have the following representation

p = 3.5b - 84

Hence, the function that represents the profit p for selling b bracelets is p = 3.5b - 84

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The problem involves finding the radius of a cylindrical can that will minimize the cost of the metal to make the can, given that the can must hold one liter of oil.

Specifically, we need to find the radius of the can that will minimize the surface area, and hence the cost, of the metal required to make the can.

To solve the problem, we need to first write an expression for the surface area of the can in terms of its radius, and then differentiate this expression with respect to the radius to find the critical point. We then need to check that the critical point corresponds to a minimum value of the surface area, which will give us the optimal radius for the can. Optimization problems like this one are used in many fields, including engineering, economics, and physics, to find the best course of action given certain constraints and objectives.

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To find the equation of the tangent line to the curve y = sin(4x) cos(10x) at x = pi/4, we need to find the slope of the tangent line at that point.

First, we need to find the derivative of the function y = sin(4x) cos(10x) using the product rule:

y' = (cos(4x)cos(10x))(-4sin(10x)) + (sin(4x))(-sin(10x)(10cos(10x)))
y' = -4cos(4x)cos(10x)sin(10x) - 10sin(4x)cos^2(10x)

Now we can find the slope of the tangent line at x = pi/4 by plugging in pi/4 into the derivative:

y'(pi/4) = -4cos(pi/2)cos(5pi/2)sin(5pi/2) - 10sin(pi/2)cos^2(5pi/2)
y'(pi/4) = -4(0)(-1)(-1) - 10(1)(1)
y'(pi/4) = 10

So the slope of the tangent line at x = pi/4 is 10. We also know that the point (pi/4, sin(4(pi/4))cos(10(pi/4))) is on the tangent line. This simplifies to (pi/4, 0.5), since sin(4(pi/4)) = sin(pi) = 0 and cos(10(pi/4)) = cos(5pi/2) = 0.

Using the point-slope form of the equation of a line, we can write the equation of the tangent line as:

y - 0.5 = 10(x - pi/4)

Simplifying, we get:

y = 10x - 5 + 0.5
y = 10x - 4.5

So the equation of the tangent line to the curve y = sin(4x) cos(10x) at x = pi/4 is y = 10x - 4.5.
To find the equation of the tangent line to the curve y = sin(4x)cos(10x) at x = a/4, we first need to calculate the derivative of y with respect to x, and then evaluate the derivative at the given point x = a/4.

1. Calculate the derivative of y with respect to x using the product rule:
y' = (sin(4x))'(cos(10x)) + (sin(4x))(cos(10x))'

2. Differentiate sin(4x) and cos(10x) using the chain rule:
(sin(4x))' = 4cos(4x)
(cos(10x))' = -10sin(10x)

3. Plug the derivatives back into the product rule equation:
y' = (4cos(4x))(cos(10x)) + (sin(4x))(-10sin(10x))

4. Evaluate the derivative at x = a/4:
y'(a/4) = (4cos(a))(cos(10(a/4))) + (sin(a))(-10sin(10(a/4)))

5. Find the value of y at x = a/4:
y(a/4) = sin(4(a/4))cos(10(a/4))

6. Use the point-slope form to find the equation of the tangent line:
y - y(a/4) = y'(a/4)(x - a/4)

Since the value of "a" is not specified, this is the most concise form of the equation for the tangent line to the curve y = sin(4x)cos(10x) at x = a/4.

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The volume of the oblique prism is approximately 55.424 cm³.

The volume of the cube is given as 64 cm³, which means that each side of the cube has a length of 4 cm.

To find the volume of the oblique prism, we need to know the area of the base and the height. The base of the oblique prism is a parallelogram, and we can find its area using the formula:

area = base × height

where the base is the length of one side of the parallelogram, and the height is the perpendicular distance between the base and the opposite side.

Since the parallelogram is tilted at an angle of 60°, we need to find the perpendicular height by using trigonometry. The height of the parallelogram is given by:

height = (side length) × sin(60°)

height = 4 × sin(60°)

height = 4 × 0.866 = 3.464

Therefore, the area of the base is:

area = (side length) × height

area = 4 × 3.464 = 13.856 cm²

To find the volume of the oblique prism, we multiply the area of the base by the height of the prism. Since the height of the prism is also 4 cm (the same as the side length of the cube), we have:

volume = area of base × height

volume = 13.856 × 4 = 55.424 cm³

Therefore, the volume of the oblique prism is approximately 55.424 cm³.

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Answer:

x=3, Adding and dividing. (Im not too sure how to answer that question, Are there some options that you learned in class?)

Step-by-step explanation:

4x-5=7

+5       +5

4x=12

/4      /4

x=3

Answer:  10/12

Step-by-step explanation:

since they give you adjacent to angle m and hypotenuse use

cos x = opp/hyp

cos M = 10/12

The distance the boat travels to get to the beach is approximately 5.0 miles.

To see why, we can draw a right triangle on the coordinate plane, with one leg along the x-axis (going 3.5 miles east) and the other leg along the y-axis (going 4 miles south). The hypotenuse of this triangle is the straight distance from the marina to the beach, which is the distance the boat travels.

Using the Pythagorean theorem, we can find the length of the hypotenuse:

c^2 = a^2 + b^2

c^2 = (3.5)^2 + (4)^2

c^2 = 12.25 + 16

c^2 = 28.25

c ≈ 5.0

Therefore, the distance the boat travels to get to the beach is approximately 5.0 miles.

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Answer:

y=4x+4

Step-by-step explanation:

The slope formula is:
[tex]y=mx+b[/tex]

with m being the slope and b being the y-intercept

Given: slope=4, y-intercept=4

We can substitute the slope and the y-intercept into the question:

y=4x+4

Hope this helps! :)

The equation of the line in slope-intercept form of a line with slope 4 and y-intercept 4 is [tex]\text{y} = 4\text{x} + 4[/tex].

The ratio that y increase as x increases is the slope of a line. The slope of a line reflects how steep it is, but how much y increases as x increases. Anywhere on the line, the slope stays unchanged (the same).

[tex]\text{m}=\dfrac{\text{y}_2-\text{y}_1}{\text{x}_2-\text{x}_1}[/tex]

[tex]\text{m}=\dfrac{(\text{y}\bar{\text{a}}-\text{y}\bar{\text{a}})}{(\text{x}\bar{\text{a}}-\text{x}\bar{\text{a}})}[/tex]

It is given that:

A line with slope 4 and y-intercept 4.

The linear equation in one variable can be made:

As we know,

The standard equation of the line is:

[tex]\text{y} = \text{mx} + \text{c}[/tex]

Here m is the slope and c is the y-intercept.

[tex]\text{m} = 4[/tex]

[tex]\text{c} = 4[/tex]

[tex]\boxed{\bold{y = 4x + 4}}[/tex]

Thus, the equation of the line in slope-intercept form of a line with slope 4 and y-intercept 4 is [tex]\text{y} = 4\text{x} + 4[/tex].

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The value of the expression 5 + 5 × 5 ÷ 5 ÷ 5 is equal to 10.

The order of operations in mathematics is to perform the operations in the following order:

Using this rule, we can simplify the expression:

First, we perform the multiplication and division from left to right:

5 x 5 = 25

25 ÷ 5 = 5

Then, we add the remaining terms:

5 + 5 = 10

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Lower Bound: 20 - 29.67 ≈ -9.67

Upper Bound: 20 + 29.67 ≈ 49.67.

The conversion of MAD to the standard deviation for normal distributions can be obtained using the given relationship:

Standard Deviation (σ) = MAD / 0.6745

For both distributions, the MAD holds a value of $20, thus arriving at σ ≈ 29.67.

There are two normal distributions now defined by their parameters as follows:

Mean (µ1) = $100 and Standard Deviation (σ1) = 29.67

Mean (µ2) = $120 and Standard Deviation (σ2) = 29.67.

Since both distributions share an equivalent standard deviation, we can perform a comparison of means to determine the overlap between them.

4

Typically there is observed moderate overlapping within one standard deviation from the difference in means.

The calculation of the difference in means indicates µ2 - µ1 = 120 - 100 = 20. Taking one standard deviation (which equates to 29.67) into consideration with respect to the difference of the means leads us to this range:

Lower Bound: 20 - 29.67 ≈ -9.67

Upper Bound: 20 + 29.67 ≈ 49.67.

It's noteworthy that negative values would not make sense within this context leading us to assume that the approximate overlap range is situated between $0 and $50 resulting in these normal distributions manifesting a sensible amount of overlap therein.

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The Complete Question

When comparing two normal distribution graphs with a mean of $100 and $120 respectively, and both having a MAD of $20, at what range do you see a moderate amount of overlap between the two distributions?

If the researcher had used H0 >= 38 as the alternative hypothesis instead of H1 < 38, the p-value would have been (1-0.0627) = 0.9373. This can be calculated using the complement rule for probabilities. So, the correct option is A).

The given hypothesis is

H0: µ = 38 (null hypothesis)

Ha: µ < 38 (alternative hypothesis)

Given: Sample mean = 35 and p-value = 0.0627

We need to find the p-value if the researcher had used Ha: µ > 38 instead of Ha: µ < 38.

The new alternative hypothesis is

Ha: µ > 38

We can find the new p-value as follows

p-value = P(Z ≤ z-score) [For a one-tailed test]

where z-score = (sample mean - hypothesized mean) / (standard deviation / sqrt(sample size))

Here, hypothesized mean (µ) = 38, sample mean (X) = 35, standard deviation is not given, so we cannot calculate z-score directly.

But, we know that z-score is the number of standard deviations the sample mean is from the hypothesized mean.

Therefore, we can calculate the z-score indirectly using the formula

z-score = (X - µ) / (s / √n)

where s = sample standard deviation, n = sample size

We do not have the sample standard deviation, so we will assume it is equal to the population standard deviation or use a t-distribution if we have the sample size and degrees of freedom.

Assuming a standard normal distribution, the z-score can be calculated as

z-score = (35 - 38) / (σ / √(n))

where n = sample size

We do not have the value of σ, so we cannot calculate the z-score. However, we can still find the new p-value using the given p-value.

The p-value for the original test (Ha: µ < 38) is 0.0627.

For a one-tailed test, the p-value for the opposite direction (Ha: µ > 38) is:

p-value = 1 - 0.0627

p-value = 0.9373

Therefore, if the researcher had used Ha: µ > 38 instead of Ha: µ < 38, the new p-value would have been 0.9373. So, the correct answer is A).

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--The given question is incomplete, the complete question is given

" A researcher conducted a test of the hypotheses used H. <38 as the alternative hypothesis? 38 versus H. 38. The sample mean was 35 and the p value for the test was 0.0627 What would the pvalue have been if the researcher had A 1-0.0627 B) 1-2(0.0627) C 1-0) (0.0627) D) 2(0.0627) (E 0.0627)"--

Annette's average speed was 40 mph if Annette drives her car 115 miles and has an average of a certain speed.

What is Average speed ?

Average speed is the total distance traveled divided by the total time taken to travel that distance. It is a measure of the overall speed of an object or person over a certain period of time.

Let's call Annette's original average speed "x". We can use the formula:

distance = speed x time

to set up two equations based on the given information.

For the first part of the trip:

115 = x * t1 (where t1 is the time it took Annette to travel 115 miles at speed x)

For the second part of the trip:

138 = (x + 8) * t2 (where t2 is the time it would have taken Annette to travel 138 miles at a speed of x + 8)

Since Annette traveled the same amount of time for both parts of the trip, we can set t1 equal to t2:

t1 = t2

We can solve for t1 in the first equation:

t1 = 115 : x

And we can solve for t2 in the second equation:

t2 = 138 : (x + 8)

Since t1 = t2, we can set the two expressions for t equal to each other:

115 : x = 138 : (x + 8)

Now we can solve for x:

115(x + 8) = 138x

115x + 920 = 138x

920 = 23x

x = 40

Therefore, Annette's average speed was 40 mph.

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Mr. Smith should make 3 rows on the table so that each brownie has its own square.

We shall use mathematical operations to determine the number of rows Mr. Smith would use on the table.

Some mathematical operations include addition, subtractions, multiplications, division, etc., to find out the number of rows Mr. Smith would make.

First, let's find the total number of brownies brought by the students:

12 + (4 x 3) = 24

Next, we shall divide the table into squares so that each brownie has its own square.

Since there are 24 brownies, we need 24 squares.

Then, since the table has 8 columns, we can divide the brownies equally among these columns to get the number of rows needed.

24 ÷ 8 = 3

Therefore, Mr. Smith should make 3 rows on the table so that each brownie has its own square.

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The evaluated probability that there have been 2 occurrences in ten minutes  is 0.0842, under the condition that the mean number of occurrences in ten minutes is 5.

Here we have to apply  the Poisson distribution formula. The formula is
[tex]P(X = k) = (e^{-g} * g^k) / k!,[/tex]
Here
X = number of occurrences,
k = number of occurrences we want to find the probability for,
e = Number of Euler's
g = mean number of occurrences in ten minutes.

For the given case, g = 5 since
Therefore,
P(X = 2) = (e⁻⁵ × 5²) / 2!
≈ 0.0842.

Hence,  after careful consideration the  evaluated probability that there are 2 occurrences in ten minutes is  0.0842.

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At the point P(2,2), the unit vector for the direction of steepest ascent is  (-i + j)/√2, and the unit vector for the direction of steepest descent is (i - j)/√2. A vector that points in the direction of no change in the function at P is (2e^(-1/3)/49) i + (2e^(-1/3)/49) j + (2/7) k.

To find the unit vectors that give the direction of steepest ascent and steepest descent at P, we need to find the gradient of F at P and normalize it to obtain a unit vector.

First, we find the partial derivatives of F with respect to x and y

Fx = -2x e^(-x^2/(16-y^2))/((16-y^2)^2)

Fy = 2y e^(-x^2/(16-y^2))/((16-y^2)^2)

Plugging in the coordinates of P, we get

Fx(2,2) = -2e^(-1/3)/49

Fy(2,2) = 2e^(-1/3)/49

Therefore, the gradient of F at P is

∇F(2,2) = (-2e^(-1/3)/49) i + (2e^(-1/3)/49) j

To obtain the unit vector in the direction of steepest ascent, we normalize the gradient

u = (∇F(2,2))/||∇F(2,2)|| = (-i + j)/√2

To obtain the unit vector in the direction of steepest descent, we take the negative of u

v = -u = (i - j)/√2

To find a vector that points in a direction of no change in the function at P, we need to find a vector orthogonal to the gradient of F at P. One way to do this is to take the cross product of the gradient with the vector k in the z-direction

w = ∇F(2,2) x k = (2e^(-1/3)/49) i + (2e^(-1/3)/49) j + (2/7) k

Therefore, the vector that points in a direction of no change in the function at P is

(2e^(-1/3)/49) i + (2e^(-1/3)/49) j + (2/7) k

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The complete equation of two squares to find the product of 22 and 18 is (22 + 18)(22 - 18) = 396

When we can interpret an expression as the difference of two perfect squares, i.e. a2-b2, we can factor it as (a+b)(a-b).

To use the difference of two squares to find the product of 22 and 18:

First, find the average of the two numbers:

(22 + 18) ÷ 2 = 20

Then, find the difference between the two numbers:

22 - 18 = 4

Now we can write:

(20 + 4)(20 - 4) = 24 × 16 = 384

But we need to add the extra 12 to get 396:

(20 + 4)(20 - 4) + 12 = 396

So the completed equation is:

(22 + 18)(22 - 18) = 396

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The average number of vehicles registered in each borough of NYC is 4.2 x 10^5.

To find the average number of vehicles registered in each borough of NYC, we need to divide the total number of registered vehicles by the number of boroughs. Therefore, the average number of vehicles registered in each borough can be calculated as:

Average number of vehicles = Total number of vehicles registered / Number of boroughs

= 2.1 x 10^6 / 5

= 4.2 x 10^5

Therefore, the average number of vehicles registered in each borough of NYC is 4.2 x 10^5.

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It would take Jose approximately 3232 minutes (or about 53.87 hours) to read 2020 pages at the same rate of 2.5 pages every four minutes.

To determine how long it would take Jose to read 2020  runners at the same rate of2.5  runners every four  twinkles, we can use a proportion.   Let x be the number of  twinkles it would take Jose to read 2020  runners. also, we can set up the following proportion:

2.5 pages / 4 minutes = 2020 pages / x minutes

To solve for x, we can cross-multiply and simplify:

2.5 pages * x minutes = 4 minutes * 2020 pages

2.5x = 8080

x = 8080 / 2.5

x = 3232

Therefore, it would take Jose approximately 3232 minutes  to read 2020 pages at the same rate of 2.5 pages every four minutes.

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About 10,676 gallons of paint were used to paint the 157 newly built homes in the subdivision, assuming each house required exactly 68 gallons of paint and 13 paint brushes.

The statement problem states that there are 157 newly built homes in a subdivision, and that 68 gallons of paint and 13 paint brushes were used for each house. This means that each house required 68 gallons of paint and 13 paint brushes.

To find the total amount of paint used for all 157 houses, we need to multiply the amount of paint used per house (68 gallons) by the number of houses (157):

Total amount of paint = 68 gallons/house x 157 houses

Total amount of paint = 10,676 gallons

Therefore, approximately 10,676 gallons of paint were used for the 157 newly built homes in the subdivision.

It's worth noting that this calculation assumes that each house required exactly 68 gallons of paint and 13 paint brushes. In reality, there may be some variation in the amount of paint and brushes used for each house, so the actual total may be slightly different.

However, this calculation provides a reasonable estimate of the total amount of paint used

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The circumference of the brim of Arnold's hat is 37.68 inches.

What is circle?

A circle is a geometric shape that consists of all points in a plane that are equidistant from a fixed point called the center. It can also be defined as the set of points that are a fixed distance (called the radius) away from the center point. The distance around the circle is called its circumference, and the distance across the circle passing through the center is called its diameter.

The circumference of a circle can be calculated by the formula C = πd, where C is the circumference, π is the mathematical constant pi, and d is the diameter of the circle.

In this case, the diameter of the brim is 12 inches, so we can substitute that value into the formula:

C = πd

C = 3.14 x 12

C = 37.68

Therefore, the circumference of the brim of Arnold's hat is 37.68 inches.

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Step-by-step explanation:

y = 3x^4 + 8x/(2x)=

y = 3x^4 + 4       then

dy/dx = 12 x^3        and this = 882

12 x^3 = 882

x^3 = 73.5

x =  4.1889

When dealing with absolute value expressions, we must consider both the positive and negative values of the argument.

In this case, we are asked to simplify[tex]|x÷3| if x<0[/tex], which means that x is a negative number.

To simplify this expression, we must first evaluate x÷3, which gives us a negative number divided by a positive number, resulting in a negative quotient.

However, since we are only interested in the absolute value of this quotient, we must ignore the negative sign and write the expression as:

[tex]|x÷3| = -(x÷3)[/tex]

Note that the negative sign in front of the expression serves to cancel out the negative sign of the quotient, thus giving us a positive result.

Therefore, the simplified expression for[tex]|x÷3| if x<0 is -(x÷3)[/tex]. This expression can be used to evaluate the value of |x÷3| for any negative value of x, by simply plugging in the corresponding value for x.

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While a sample of mall shoppers may be useful for certain types of research, it may not provide a trustworthy estimate of the current unemployment rate. Instead, a more appropriate method would be to conduct a survey that is designed to be representative of the population, using a random sampling technique, and ensuring that the sample size is large enough to provide reliable estimates.

While sampling at the mall may be a convenient way to gather data, it may not be an appropriate method for estimating the current unemployment rate for several reasons:

Sampling Bias: The people who visit malls may not be representative of the general population. For instance, people who are unemployed may not have the time or money to go to the mall during the day, which could skew the results.

Sampling Size: The sample size may not be large enough to provide an accurate estimate of the unemployment rate. Even if the interviewer approaches a large number of shoppers, it may not be sufficient to represent the entire population of the city or country.

Self-Selection Bias: People who choose to participate in the survey may not be representative of the population as a whole. For instance, people who are more interested in the topic may be more likely to participate, which could bias the results.

Data Collection Bias: Even if the sample is representative, the data collection method may introduce biases. For instance, the interviewer may have a certain tone of voice or demeanor that could influence how people respond to the questions.

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The length of side a is 50 if the angle ∠bac is 50° and the length of side b is 20 and side c is 35 using cosine law.

Length of side b = 20

Length of side c = 35

Angle ∠bac =  50°

To calculate the length of the side a, we need to use the cosine law. The formula is:

[tex]a^2 = b^2 + c^2 - 2bc cos(A)[/tex]

Substituting the given values in the formula, we get:

[tex]a^2 = 20^2 + 35^2 - 2(20)(35)cos(50°)[/tex]

[tex]a^{2}[/tex] = 400 + 1225 + (1400)*(0.642)

[tex]a^{2}[/tex] = 1625 + 898.8

a = [tex]\sqrt{2523.8}[/tex]

a = 50

Therefore we can conclude that the length of side a is 50 using cosine law.

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