Answer:
<u>Squaring a number.</u>
Step-by-step explanation:
The square root is an operation that undoes an exponent of 2, which is the inverse operation of squaring a number.
A)line a and line b is your answer.
The sides of the triangle are 3x, 4x and 5x
3x + 4x + 5x = 90
12x = 90
x = 90/12
x = 7.5
first side = 3x = 3 * 7.5 = 22.5 cm
second side = 4x = 4 * 7.5 = 30 cm
third side = 5x = 5*7.5 = 37.5 cm
The answer is B
Reason:
Ernie ?
Bert 30°
Elmo 105°
Ernie was 5.2m Rounded = 5
