Euler's formula for a polyhedron is given by:
Make E, the subject of the formula:
Put F = 20, V = 12, to obtain E,
Therefore, there are 30 edges
BRAINIEST TO WHOEVER RIGHT
1 answer:
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<h3>Answers:</h3>
- g(-1) = -1
- g(1) = -3/2
- g(5) = -7/2
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Explanation:
The piecewise function g(x) is defined based on what the input is.
- If the input x is less than -2, then g(x) = 2
- Or if
then g(x) = -(x-1)^2+3
- Or if
then g(x) = (-1/2)x-1
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In the case of g(-1), we have x = -1 which makes true.
So we'll use the second piece
g(x) = -(x-1)^2+3
g(-1) = -(-1-1)^2+3
g(-1) = -(-2)^2+3
g(-1) = -4+3
g(-1) = -1
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For g(1), we have x = 1 which makes true
We'll use the third piece
g(x) = (-1/2)x-1
g(1) = (-1/2)*1 - 1
g(1) = -1/2 - 1
g(1) = -1/2 - 2/2
g(1) = -3/2
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For g(5), we have x = 5 which makes true
g(x) = (-1/2)x-1
g(5) = (-1/2)*5-1
g(5) = -5/2 - 1
g(5) = -5/2 - 2/2
g(5) = -7/2