Answer:
r = 22.99 cm
Step-by-step explanation:
sphere surface area = 4πr²
6644.24 = 4 (3.142)r²
6644.24 = 12.568r²
arrange it by change the position to solve it easier
12.568r² = 6644.24
r² = 528.6632718
r = square root 528.6632718
r = 22.99 cm
-1/2x+3=-x+7
Multiply throughout by 2x
-1+6x=-2x^2+14x
2x^2-8x-1=0
Answer:
1 quarter, 2 dimes, 2 nickels, and 1 penny.
Answer:
Yes.
Step-by-step explanation:
We have to first find how much of the whole cake (1) that they all ate.
Boris eats 1/5 of the cake.
Maziy eats 1/5 of the cake.
Sanjay and Silas eat 1/5 of the cake.
Jack also has 1/5 of the cake.
The total fraction of cake eaten was:
1/5 + 1/5 + 1/5 + 1/5 = 4/5
Therefore,the fraction of the cake left is:
1 - 4/5 = 1/5
Yes, there is cake left.