Answer:
so ans is b
Step-by-step explanation:
from eqn 1
x=(36-2y)/4
putting x in y we get in 2
3(36-2y/4)+5y=34
108-6y+20y=136
14y=28
so y=2
now x=36-4)/4=32/4=8
-4
3 + (-7) = 3 + -7 = 3-7 = -4
Hope this help you :3
Volume = ⅔×pi×r³