Answer:
49
Step-by-step explanation:
The average is calculated as
average = 
Given the average of 7 numbers is 45 , then
= 45 ( multiply both sides by 7 )
sum of 7 numbers = 315
Subtract 27, 43 from the sum to obtain the sum of first 5 numbers
315 - (27 + 43) = 315 - 70 = 245 , then
average of first 5 numbers = 
= 49
The variable in this algebraic expression is b
Answer:
class B
Step-by-step explanation:
To answer this, you will represent the new side length of the square as x + 6.
To find the area you will multiply (x + 6) by (x + 6).
To do this, you will multiply x and x, x by 6 twice and 6 by 6.
See the attached picture for the expression representing the area of the new square.
