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kondaur [170]
3 years ago
12

1: In order to solve the inequality -1/4 x > 8, which of the following steps must be done?

Mathematics
1 answer:
pogonyaev3 years ago
3 0

Answer:

Step-by-step explanation:

-1/4x>8

x>8/(-1/4)

x>(8/1)(-4/1)

x>-32/1

x>-32

x<-32

The answer is D.

--------------------------

-3t+7>=9

-3t>=9-7

-3t>=2

t>=2/-3

t>=-2/3

t<=-2/3

The answer is A.

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2 years ago
What is the equation of the parabola?
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Answer:

y = -1/8 x² + 5

Step-by-step explanation:

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4/x-1+6/x+1=-12/x^2-1
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\frac{4}{x - 1} + \frac{6}{x + 1} = \frac{-12}{x^{2} - 1}

\frac{4(x + 1)}{(x - 1)(x + 1)} + \frac{6(x - 1)}{(x - 1)(x + 1)} = \frac{-12}{x^{2} - 1}

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\frac{10x - 2}{x^{2} - 1} = \frac{-12}{x^{2} - 1}

(10x - 2)(x^{2} - 1) = -12(x^{2} - 1)
10x^{3} - 10x^{2} - 2x^{2} + 2 = -12(x^{2}) + 12(1)
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10x^{3} + 2 - 2 = 12 - 2
\frac{10x^{3}}{10} = \frac{10}{10}

x^{3} = 1
x = 1
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