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3 years ago

What is the value of 4x−8(2−x) , when x=−14 ?

Mathematics

1 answer:

hoa [83]3 years ago

5 0

Answer:

-184

Step-by-step explanation:

First we plug in -14 into the x's.

4 (-14) - 8(2 - (- 14))

Then we can distribute the 8.

4 (-14) - 16 - 112

Then solve from here.

-56 - 16 - 112

= -184

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What is the equation of a line that passes through the points (-3, 4) and (2,8)?

ziro4ka [17]

Given that the line passes through the two points (-3,4) and (2,8)

We need to determine the equation of the line.

<u>Slope:</u>

The slope of the line can be determined using the formula,

$m=\frac{y_2-y_1}{x_2-x_1}$

Substituting the points (-3,4) and (2,8) in the above formula, we get;

$m=\frac{8-4}{2+3}$

$m=\frac{4}{5}$

Thus, the slope of the line is $m=\frac{4}{5}$

<u>Equation of the line:</u>

The equation of the line can be determined using the formula,

$y-y_1=m(x-x_1)$

Substituting the point (-3,4) and $m=\frac{4}{5}$ in the above formula, we have;

$y-4=\frac{4}{5}(x+3)$

$y-4=\frac{4}{5}x+\frac{12}{5}$

$y=\frac{4}{5}x+\frac{12}{5}+4$

$y=\frac{4}{5}x+\frac{32}{5}$

Thus, the equation of the line is $y=\frac{4}{5}x+\frac{32}{5}$

6 0

3 years ago

sarah worked out for 15 today. she plans to add 5 min per week. write qnd equation to represent how many minutes she will be wor

garik1379 [7]

Answer:

I think its 15 + 5x

Step-by-step explanation:

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3 years ago

The perimeter of a triangle is 6x. One side is x+3 and another side is 2x+4. What is the length of the 3rd side?

maxonik [38]

Let y = the length of the 3rd side
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3 years ago

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brilliants [131]

Answer:

Step-by-step explanation:

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3 years ago

A cylindrical well has a radius of 8 feet and a height of 13 feet what is the volume of the well use 3.14 for pie round your ans

vitfil [10]

To find the volume of a cylinder, you use this formula:
V = $\pi$ $r^{2}$ h

Plug in your numbers,
V = (3.14 * $8^{2}$ ) * 13

Exponents:
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Parentheses:
V = 200.96 * 13

Multiply:
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4 years ago