Answer:
A = 4a² - 4ab + b²
Step-by-step explanation:
The area (A) of a square is calculated as
A = s² ( s is the side length ) , so
A = (2a - b)² ← expand using FOIL
= (2a)² - 2ab - 2ab + (- b)²
= 4a² - 4ab + b²
Answer:
shirt
Step-by-step explanation:
Answer:
95
Step-by-step explanation:
Given data
Number of scores =5
84, 85, 87, and 99
Let the next score be x
Mean =90
So
Total score =84+85+87+99+x
Total score =355+x
Mean=total score /number of score
90=355+x/5
90*5=355+x
450=355+x
450-355=x
x=95
Answer:
28
Step-by-step explanation:
Area (trapezoid) = 1/2 x (6 + 8) x 4
= 2 x 14
= 28