Answer:
x=6
y=9
Step-by-step explanation:
x+5=y+2
3x=2y
x-y=-3 /*(-3)
3x-2y=0
-3x+3y=9
+---------
3x-2*9=0
3x-18=0
3x=18 //3
Answer: 3817.1 or 1215pi
Volume = πr2h
= π×92×15
=1215π
= 3817.0350741116
56.52
c=2r
C=2*3.14*9
C=56.52
B.
-5/-7×-11/-6
= (-5 * -11) / (-7*-6)
= 55 / 42.
A. = - (6/-11) = 6/11
-5/7 * 6/11 = -30/77.
B. - (-11/7) = 11/7
5/6 * 11/7
= 55/42.
There is nothing to multiply.
