Find the variance for the given sample data, round your answer to one more decimal place than the original data 7 725 1 a. 11.8 b. 7.8 22 c. 6.2 d. 7.7

D. 7.7

Step-by-step explanation:

7.725, 2 does not round up so its left to 7.7

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.