Answer:
9
Step-by-step explanation:
7r+18=r²
r²-7r-18=0
factorizing
r²+2r-9r-18=0
r(r+2)-9(r+2=0
(r-9)(r+2)=0
r-9=0
r=9
check
(r²)=(9*9)=81
7r+18=7(9) + 8=81
Answer:
The volume of the sandbox is 70 cubic feet
Step-by-step explanation:
To find the volume, simply multiply all of the dimensions by each other.
7ft * 5ft * 2ft = 70 ft^3
Answer:
if he is the to form a 666
Step-by-step explanation:
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