The correct answer is: 27 .
________________________________
Explanation:
_________________________________
9^(3/2) = (√9)³ = 3³ = 3 * 3 * 3 = 27 .
____________________________________
The expression would be (X-6)/7
88=4*22=> sqrt88=2sqrt22
sqrt22 is approximately sqrt25=5
so 4 < sqrt22 < 5
8 < 2sqrt22 < 10
8 < sqrt88 < 10
2x2-3x-20=0
4-3x-20=0
2-20=-16
-3x-16=0
-3x=16
x= -5.33333
I think i did it right. i hope this helps.
