90-20 leaves 70 for surfing. since surfing is 5 per hour, 70/5=14 hours she can surf.
Combine q terms
-30 = 12q - 10
Add 10 to both sides
-20 = 12q
Simplify
Q = -5/3
Answer:
A. 3√3/4
Step-by-step explanation:
√27x / √48 = (√9 * √3 *√x) / (√16 * √3) = (3 * √3 *√x) / (4 * √3)
divided √3 both side
= 3√x / 4
You’re supposed to put A on 1,-1
Q (2,-3) R (4,-3)
C. 248 teachers
part/whole = percent/100
62/x = 25/100
Cross multiply
6200 = 25x
Divide by 25
x = 248