270 - 216 = 54
54/270 x 100 = 20%
answer: 20% decrease
A ) equation would be X = Z / Y
B ) if X = 9 ------------> Y = 1/7
X = 21 ----------> Y = ?
21*1/7 = 21/7 , 21/7÷9 = 21*9/7 = 27
so Y equal 27
81,85,89 are the missing numbers
Answer:
This would be C
Step-by-step explanation: