3x-15=51
3x=36
X= 12
Thus the number is 12
Answer:
3ax-11a-9x
Step-by-step explanation:
Answer:
D. Square
Step-by-step explanation:
Neither a Cube or a Square pyramid have an ellipse, hexagon or octagon on them anywhere, and a cube doesn't have a triangle on it, so the only thing out of these choices that these even have in common is a square.
I hope this explains it!
Triangle QTR=~ triangle SRT