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3 years ago

108=-12 - 4 (-5n+7)I need help

Mathematics

1 answer:

Andrei [34K]3 years ago

6 0

108 = -12 + -4(-5n + 7)

108 = -12 + (7 * -4 + -5n * -4)

108 = -12 + (-28 + 20n)

108 = -40 + 20n

-20n = -40 + -108

-20n = -148

n = 7.4

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4 years ago

(1) What is the equation, in point-slope form, for a line that goes through (8, −4) and has a slope of negative 5/6 (all fractio

Andreyy89

Formula for point-slope: $y - y1 = m(x-x1)$
Plug in the values (1): $y + 4 = -\frac{5}{6} (x - 8)$ {Choice B}
Plug in the values (2): $y + 6 = \frac{1}{3}(x+ 2)$ {Choice C}
_______________________

[For (3) and (4) we need to solve for slope]

(3)
First, solve for slope.
Formula for slope: $\frac{y2-y1}{x2-x1}$
Plug in values: $\frac{-1-5}{-4-7} = - \frac{6}{11}$
Slope: $- \frac{6}{11}$
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Plug in the values: $y + 1 = - \frac{6}{11}(x + 4)$ {Choice C}

(4)
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Second, we must plug into point-slope form.
Formula for point-slope: $y - y1 = m(x-x1)$
Plug in the values: $y - 6 = - \frac{14}{11}(x + 4)$ {Choice D}

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3 years ago

Read 2 more answers

What is the solution set for -4x - 10< 2?

Alchen [17]

Answer:

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Step-by-step explanation:

-4x - 10 < 2

-4x < 12 (+10)

-x < 3 (÷4)

x < 3 (+x, -3)

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