Answer:
x = ± 6
Step-by-step explanation:
Given
x² - 72 = 0 ( add 72 to both sides )
x² = 72 ( take the square root of both sides )
x = ± = ± = ± 6
X=3 let me know if this is right ;)
0.12 x 70 = 8.4
12% of 70 is 8.4
Answer:
10 hours
Step-by-step explanation:
Say x is the number of hours he can rent the detector at most. Using it, we can set up this equation:
15 + 2x = 35
Subtract 15 from both sides
2x = 20
Divide by 2 on both sides
x = 10
1 feet is 12 inches and there is 6 segments in one feet then in 12 feet there is 72 segments