Answer:
x = ± 4
Step-by-step explanation:
Given
x² - 1 = 15 ( add 1 to both sides )
x² = 16 ( take the square root of both sides )
x = ±
= ± 4
Answer:
she added 2 instead of subtracting it. the answer is x=4
Step-by-step explanation:
10+2=12
12/2=6
Subtract the rental fee, then divide the left over amount by the cost per hour.
38-10 = 28
28 / 7 = 4
The answer is 4 hours.
Answer:
What grade is this?
Step-by-step explanation:
Answer:
the answer is 1 2/3 - 1 3/7 ÷ (1/2+ 4/7) = 2/9