formula for polyhedrons is V-E+F=2
F= faces = unknown F
V= vertices=F-8
E= edges=30
(F-8)-30+F=2
add the 2 F's and 30 & 8 so you get 2F-38=2
ince -38 doesn't have variable move it to other side by adding 38 to both sides
2F=38+2 which becomes 2F=40
now divide both sides by 2 to get F=20 so there are 20 faces
Answer:
(-6, -3) i think
Step-by-step explanation:
The discount would be 7.00 dollars.... i hope this helps
Answer:
[A} 8
[B] 3
[C] -9
[D] - 900
Step-by-step explanation:
A:-4(-4+3)+2²
8
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B:-3-3-3(-3)
3
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C:-17+2(-2)(-2)
-9
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D:-(+2(-3)(5)(3+2)(-6)
-900
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[RevyBreeze]
Answer:
D. to explain why Valentine's Day is celebrated
Step-by-step explanation: