(-9/8)x - 7 = -25
(-9/8)x - 7 + 7 = -25 + 7
(-9/8)x = -18
((-9/8)x)/(-9/8) = -18/(-9/8)
x = 18 × (8/9)
x = 16
Volume of triangular pyramid = 1/3 x area of base x height
1/3 x (1/2 x 18 x 24) x 35
=2520cm3
the answer is C
Y-x = 117
4x = y
4x-x = 117
3x = 117
3x/3 = 117/3
x = 39
The answer can vary depending on how many chairs are in each row.
We have to isolate x.
to do that we first have to add 7 to both sides
4x-7+7>17+7
now we have 4x>24
then we have to divide by 4 on both sides
4x/4>24/4
then we have the answer
x>6