Suppose the scores of all the quizzes in Ms. Chauvet’s class were Normally distributed with mean 83 and standard deviation 5. a. What percent if scores are between 78 and 93? Use the 68-95-99.7 rule.

b. A score greater than 90 earns an A. What percent of quizzed earn an A?

c. What percent of scores fall between 71 and 95?

d. What score would place a student in the 20th percentile?

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

3,6 and 7.

step-by-step explanation:

a) unit place of 37 is 7

so the unit place of cube of 37 will be

7³= 343=3

the answer is 3.

b) unit place of 56 is 6, so the unit place of cube of 56 will be

6³= 216=6

the answer is 6.

c) unit place of 133 is 3, so the unit place of cube of 133 will be

3³= 27= 7.

the answer is 7.

ed sheeran was one of the winners?

step-by-step explanation:

google xd