Answer:
x = ± 10
Step-by-step explanation:
to solve the equation let y = 0 , that is
100 - x² = 0 ( add x² to both sides )
100 = x² ( take square root of both sides )
±
= x , that is
x = ± 10
Step-by-step explanation:
An=A1. R raised to the power n-1
Find his rate:
120 / 15 = $8 per hour
Multiply the rate by hours:
$8 x 20 hours = $160
He will earn $160
It will take 72 hours to make 63 carvings
The range is 11- 3 = 8 Adding 5 would not affect the range.