Test scores for 26 students in an introductory statistics course are displayed in the stemplot below. The scores range from 72 to 98.

A stemplot titled test scores is incomplete. It has values 72 and 98, and other values are not shown.

The teacher wants to encourage her students by reporting that, overall, the scores were high. Should she use the mean or median to summarize the center of the distribution of scores?

Answer:

x = 4

y = 4√3

tan 60° = 1.7321

Step-by-step explanation:

sin 30 = 4/8

0.5 = x/8

x = 4

y² = 8² - 4² = 64 - 16 = 48

y = √48 = 4√3

tan 60° = (4√3)/4 = √3 = 1.7321

Answer:

2/5*3/7= 6/35

Step-by-step explanation:

Answer:

its d

Step-by-step explanation:

Answer:

The amount of safety inventory of cell phones best  buy should carry is $465.277

Step-by-step explanation:

Solution

We recall that:

The weekly demand for cell phones=  300 per week

The Standard Deviation = 200 per week

The lead time or number of weeks = 2 weeks (14 days)

Thus,

Z = 95%

= 1.645

Now,

The standard deviation of lead time = Standard deviation√ *√ lead time

Which is

= 200 * √ (2) =2.82.843

So,

The safety inventory = Z * Standard deviation of the lead time

= 1.645 * 2.82.843

$465.277

Answer:

\( S =4\pi r^2\)

And since we know the surface area 326.7 in^2 we can solve for the value of r like this:

\( r =\sqrt{\frac{S}{4 \pi}}\)

And replacing we got:

\( r =\sqrt{\frac{326.7 in^2}{4 (3.14)}}= 5.10 in\)

And the best answer would be:

5.1 in

Step-by-step explanation:

For this case we need to use the formula for the surface area of a sphere given by:

\( S =4\pi r^2\)

And since we know the surface area 326.7 in^2 we can solve for the value of r like this:

\( r =\sqrt{\frac{S}{4 \pi}}\)

And replacing we got:

\( r =\sqrt{\frac{326.7 in^2}{4 (3.14)}}= 5.10 in\)

And the best answer would be:

5.1 in

Answer:

5.1

Step-by-step explanation:

The equation for the surface area of a sphere is SA=4πr2 (that is squared, not a 2)

So plug in the known values:

326.7=4(3.14)r2         Multiply 4 x 3.14

326.7=12.56r2           Divide by 12.56

26.0111=r2                  Get the square root

5.0110=r

This simplifies to 5.1, which is the maximum radius of the globe.

I would recommend going back to the course and writing all of the equations on page 6 down, or printing the segment review page from resources in the course. This will hwlp you with those problems in the future.

The two ratios are equivalent because if we multiply both of the numbers by 3, we will get the other ratio.

Here we want to explain why the two ratios:

5:6 and 15:18

Are equivalent, where equivalent means that these two ratios mean the same thing.

Now, if we take any ratio

a:b

and we multiply both numbers by the same real number k (except for zero) we will get the equivalent ratio.

k*a: k*b

Now, let's look to our ratios:

5:6

If we multiply these 2 numbers by 3, we will get.

3*5: 3:6

15: 18

So yes, these are equivalent.

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Answer:  A) 3 x 4

Step-by-step explanation:

The dimensions of a matrix are ROWS x COLUMNS.

The given matrix has 3 rows and 4 columns,

therefore the dimensions are: 3 x 4

Answer:

Below

Step-by-step explanation:

32/2 x 100% = 1600 %

Answer:

the answer would be 40

Step-by-step explanation:

supplementary angles are 180

180-140=40

x=40

Answer:

An equation of the line with a slope of 2 and a is inercept of 7

Step-by-step explanation:

I think this is what you are saying?

Answer: yes!

Step-by-step explanation:

Answer:

Quadrant V

Step-by-step explanation:

A co-ordinate graph only has 4 quadrants!

Answer: why do they have so many cars what are you trying to ask and what does Mario have to do with this?

Step-by-step explanation:

please change your question.

The present age of the father is 10 years.

Let

Age of the father = x

Age of each child = y

Number of children = 2

Current age:

x = 2y

After 5 years:

(x + 5) = 2(2y)

x + 5 = 4y

Substitute x = 2y into

x + 5 = 4y

2y + 5 = 4y

5 = 4y - 2y

5 = 2y

divide both sides by 2

y = 5/2

y = 2.5

So,

x = 2y

x = 2(2.5)

x = 5

Therefore, present age of the father;

x + 5

= 5 + 5

= 10

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The first node in set 1 should represent the element.

For each potential value in set 2, create a branch.

Create a new node to represent the following set 1 element at the end of each branch.

Steps 2-4 must be repeated for each additional Set 1 component.

All potential outcomes are represented by the final nodes.

The appropriate line of best fit for the scatter plot is y hat equals 67 hundredths times x plus 4 and 5 hundredths.

The number is a mathematical entity used to represent a computer's magnitude it can be a symbol or a combination of simple you should in order to take quantity such as the two, five, seven, three, or eight numbers are used to verify the context including counting measuring and computing.

This line of best fit indicates that the number of households with cable television will increase by 67 hundredths (or 0.67) each year. This line of best fit is based on the data points on the scatter plot, which suggest that the number of households with cable television has been steadily increasing over the years.

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Answer:

  0 +256i

Step-by-step explanation:

According to Euler's formula, ...

  (4 cis π/8)^4 = (4^4) cis (4×π/8) = 256 cis π/2 = 0 +256i

_____

"cis" is an abbreviation sometimes used for "cosine + i×sine". It simplifies writing the expression. Engineers sometimes simplify it further, writing 4∠(π/8) for the expression in this problem statement.

Answer:

The total weight of the file was 64 mb.

Step-by-step explanation:

Given that Rachel downloaded a movie at a constant speed, and after she downloaded 40% of the movie, the remaining download time was 40 seconds, while after she downloaded 40 mb, the remaining download time was 16 seconds, to determine the total size of the movie rounded to the nearest mb, the following calculation must be performed:

100 - 40 = 60

60% = 40 seconds

40 mb = 16 seconds left

16/40 = 4/10

60/40 = 1.5

1.5% for every 1 second of download.

16 x 1.5 = 24

40 + 24 = 64

Thus, the total weight of the file was 64 mb.

The percentage increase China's population from 1970 to 1995 is: 56.25%.

Percentage increase = (Final Value - Original Value)/Original value × 100.

Given the following:

Original value = 0.8 billion

Final Value = 1.25 billion

Final Value - Original Value = 1.25 - 0.8

Final Value - Original Value = 0.45

Percentage increase = 0.45/0.8 × 100 = 56.25%.

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Answer:

P=4a

Step-by-step explanation:

calculate the perimeter of a square, add all the sides of it. There are 4 sides of a square which are all equal in length. The sum of the sides will give its perimeter. We can use also find the perimeter of square if the length of diagonal or area of square is given to us.

Answer:

f(x) = π ((3 + sin x)² − 1²)

Step-by-step explanation:

This solid is hollow.  So if we cut a cross section, the result will be a "washer", or a disk with a hole in it.  The volume of the washer is the volume of the disk minus the volume of the hole:

dV = π R² h − π r² h

dV = π (R² − r²) h

In this case, the outside radius, or radius of the disk, is:

R = y₂ − (-1)

R = 2 + sin x − (-1)

R = 3 + sin x

The inside radius, or radius of the hole, is:

r = y₁ − (-1)

r = 0 − (-1)

r = 1

And of course, the thickness is h = dx.

Therefore:

dV = π ((3 + sin x)² − 1²) dx

So f(x) = π ((3 + sin x)² − 1²).

Answer:

I think the answer is 88 wheels.

Step-by-step explanation:

You multiple 11 and 8 to get your answer or you can take 8+8+8+8+8+8+8+8+8+8+8 to get your answer.

The values of x and y are 20 and 12.

The values of x and y are -3 and 2.

We have,

In a parallelogram,

- Opposite sides are congruent:

The opposite sides of a parallelogram have equal lengths.

- Opposite angles are congruent:

The opposite angles of a parallelogram have equal

Now,

a)

Opposite angles are congruent:

So,

5x + 29 = 7x - 11

29 + 11 = 7x - 5x

40 = 2x

2x = 40

x = 40/2

x = 20

And,

3y + 15 = 5y - 9

15 + 9 = 5y - 3y

24 = 2y

y = 24/2

y = 12

b)

Opposite sides are congruent:

So,

-6x = -4x + 6

-6x + 4x = 6

-2x = 6

x = -3

And,

7y + 3 = 12y - 7

12y - 7y = 3 + 7

5y = 10

y = 2

Thus,

The values of x and y are 20 and 12.

The values of x and y are -3 and 2.

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The equation of a circle passing through the point (- 2, - 3) is -

(x)² + (y)² = 13.

The general equation of a circle is -

(x - h)² + (y - k)² = r²

where (h, k) is the center and (r) is the radius.

Given is a that circle passes through (-2, -3).

For the center at origin, we can write -

(x)² + (y)² = r²

(x)² + (y)² = (- 3 - 0)² + (- 2 - 0)²

(x)² + (y)² = 9 + 4

(x)² + (y)² = 13

Therefore, the equation of a circle passing through the point (- 2, - 3) is -

(x)² + (y)² = 13.

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1) Since we know the decimal places, then we can write out the following number:

Note the 3 decimal places after the dot is the thousandth's place. Note that we can either write the last digit or omit it.

The answer is option D

Parallelogram 1 and parallelogram 2 are similar and the point of location are not the same on the two different graph. Hence, the two parallelogram 1 and 2 are not congruent. Parallelogram 2 can be created by rotating, reflectiing, and / or translating and dilating parallelogram 1

Answer: The Correct Answer is D

Step-by-step explanation:

An image of triangle NOG after a rotation 90° clockwise about the origin is shown below.

In Mathematics and Geometry, a rotation is a type of transformation which moves every point of the object through a number of degrees around a given point, which can either be clockwise or counterclockwise (anticlockwise) direction.

Next, we would apply a rotation of 90° clockwise about the origin to the coordinate of this triangle NOG in order to determine the coordinate of its image;

(x, y)                →            (y, -x)

Point N = (-4, -1)          →     Point N' (-1, 4)

Point O = (-4, -3)          →     Point O' (-3, 4)

Point G = (0, -1)          →     Point G' (-1, 0)

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Answer:

B and D

Step-by-step explanation: I got it right