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Bess [88]
3 years ago
13

Evaluate -3x 3 - 4x for x = -1. 1 7 -1

Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0
-3x^{3}-4x
=-3(-1)^{3} -4(-1)
=-3*(-1)+4
=3+4
=7
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Given the midpoint (1.5,1.5) and the endpoint (5,7) where is the other endpoint located
earnstyle [38]

The formula of a midpoint:

M_{AB}\left(\dfrac{x_A+x_B}{2},\ \dfrac{y_A+y_B}{2}\right)

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M(1.5,\ 1.5)\to x_M=1.5,\ y_M=1.5\\A(5,\ 7)\to x_A=5,\ y_A=7

Substitute

\dfrac{5+x_B}{2}=1.5\qquad|\cdot2\\\\5+x_B=3\qquad|-5\\\\x_B=-2\\\\\dfrac{7+y_B}{2}=1.5\qquad|\cdot2\\\\7+y_B=3\qquad|-7\\\\y_B=-4

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What does h equal in the equation S=2πr2+2πrh?
Troyanec [42]

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h

+

2

π

r

2

−

2

π

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2

S

−

2

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2

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h

+

0

S

−

2

π

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π

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h

2

π

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S

−

2

π

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2

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π

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h

2

π

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S

−

2

π

r

2

2

π

r

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h

h

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2

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2

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h

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S

2

π

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−

2

π

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2

2

π

r

h

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S

2

π

r

−

2

π

r

2

2

π

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h

=

S

2

π

r

−

r

2

r

h

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S

2

π

r

−

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What is the value of X in the figure
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