Math 1139-600 summer Homework: Sec 12.4 The Normal Distribution
Score: 0 of 1 pt
2 of 21 (1 complete)
X 12.4.1
The scores on a test are normally distributed with a mean of 120 and a standard deviation of 24. What is the score that is 1 standard
A score of is 1 standard deviation above the mean.

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;

the graph on the bottom right

it would open into a square depending on the type of envelope i’m not sure about the second part

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.