Ask question

Ask question

All categories

2 years ago

8

Scores on an English test are normally distributed with a mean of 30.6 and a standard deviation of 6. Find the score that separa

tes the top 59% from the bottom 41%

1 answer:

Travka [436]2 years ago

3 0

Answer:

The score that separates the top 59% from the bottom 41% is 31.68

Step-by-step explanation:

You might be interested in

What values of k will make the line containing points (k,3) and (-2,1) parallel to the line through (5, K) and (1,0)

rjkz [21]

Answer:

k = -4 or 2

Step-by-step explanation:

For the lines to be parallel, the lines would need to be the same slope. This means to find the slope of each we would take the difference of the rise over the run.

$\frac{1-3}{-2-k}=\frac{-2}{-2-k}$

and

$\frac{0-k}{1-5}=\frac{-k}{-4}$

To find K, set them equal.

$\frac{-2}{-2-k} = \frac{-k}{-4}\\-k(-2-k) = -2*-4\\2k+k^2=8\\k^2+2k-8=0$

Factor the quadratic and solve for K.

$(k+4)(k-2)=0$

k+4=0 so k=-4

k-2=0 so k=2

4 0

3 years ago

A. Identify all pair of parallel in the diagram.

12345 [234]

Answer:

Parallel: G and F

perpendicular: G & H, F & H

Step-by-step explanation:

G and F are parallel because they will never cross, where as both are perpendicular to H because they intersect at 90°

4 0

3 years ago

I just cant remember how to do these ones. been so long<br><br>Solve 2x – 5 = 7

TEA [102]

Answer:

2x=7+5

2x=12

X=12/2=6

Kskwkjxu

8 0

2 years ago

For a project, Carlos must provide one cut-out paper model of each type of triangle: acute, right, and obtuse. He sketches each

koban [17]

I would most likely say 12.5 square units

3 0

1 year ago

Two similar FOR SALE signs have a scale factor of 5:3. The largest sign’s perimeter is 60 inches. Find the small sign’s perimete

Ulleksa [173]

The small sign's perimeter is 36 inches

Step-by-step explanation:

The scale factor between two figures is obtained by:

$Scale = \frac{P_{l}}{P_{s}}$

So,

We know that

$Scale= 5:3\\P_l = 60\ in\\$

Putting the values in the above equation of scale factor we get

$\frac{5}{3} = \frac{60}{P_s}$

Cross multiplication

$5 * P_s = 60*3\\5P_s = 180$

Dividing both sides by 5

$\frac{5P_s}{5} = \frac{180}{5}\\P_s = 36$

Hence,

The small sign's perimeter is 36 inches

Keywords: Scale factor, Ratio

Learn more about scale factor at:

#LearnwithBrainly

5 0

3 years ago