Answer:
x≤30
Step-by-step explanation:
he can spend no more than $30 a week
Let 's x the length of the pyramid:
V=x²*h/3
V=1024 and h=12
So x²*12/3=1024
==>x²=1024*3/12
==>x²=256
==>x²=16²
==> x=16 for (x=-16 must be exclude <0)
......brainpower pts pls
Answer:
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Step-by-step explanation:
Answer:
Step-by-step explanation:
Proportion:
substitute x = 15:
Volume of the bottom rectangle:
12 x 4.5 x 5.5 = 297 cubic cm
Volume of triangle:
1/2 x 12 x 5 = 30 x 4.5 = 135 cubic cm
Total volume = 297 + 135 = 432 cubic cm
