16x = 45 - 29
16x = 16
x = 16/16
x = 1
He can make 12 or 9 because 9x4=36 and 12x3=36
Step-by-step explanation:
-3x² + 7x + 2 + x³ - x² -9
= x³ -3x² -x² + 7x +2 -9
= x³ -4x² + 7x -7
21 its 21 because it is 21
Answer:
i'd say so
Step-by-step explanation: none of the sides are the same length as another
