B. Is the correct answer. For part B, he can buy 15 balloons since X=15. Plug this back into the equation to check: 2(15)+20=50.
2(15)=30+20=50.
The cost of the roll = 125 * 45 = 5625 cents
5625 / 100 = 56.25 $
Answer:
Radius= 2r
Step-by-step explanation:
Surface area of hemisphere
=2 x 22/7 x (2r)^2
=44/7 x 4 r^2
=174/7 r^2
=25.14 r^2
Answer:
please transalate
porfavor transalate
Step-by-step explanation:
The volume of the pyramid is 15 yd