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const2013 [10]
3 years ago
6

Simplify: (4x2 + 8xy + 2y2) − (−9x2 − 4xy − 7y2)

Mathematics
2 answers:
OLga [1]3 years ago
7 0
When simplified 13x2+12xy+9y2 
PSYCHO15rus [73]3 years ago
6 0
You're answer will be C 13x2+12xy+9y2
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The volume of this regular pentagonal pyramid is 82.5 cubic meters. What is the height of the pyramid?
a_sh-v [17]

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<h3>Volume of a regular pentagonal pyramid</h3>

The formula for determining the volume of a regular pentagonal pyramid is given as;

V=5/12tan(54°)ha^2

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