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Bumek [7]
3 years ago
7

What times what equals 120

Mathematics
1 answer:
Vikki [24]3 years ago
5 0
10.95445115010332•10.95445115010332
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Find the value of r so the line that passes through (-5,2) and (3,r) has a slope of -1/2
soldier1979 [14.2K]

The value of r so the line that passes through (-5,2) and (3,r) has a slope of -1/2 is -2

<u>Solution:</u>

Given that line is passing through point (-5, 2) and (3, r)

Slope of the line is \frac{-1}{2}

Need to determine value of r.

Slope of a line passing through point \left(x_{1}, y_{1}\right) \text { and }\left(x_{2}, y_{2}\right)  is given by following formula:

\text { Slope } m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}  --- eqn 1

\text { In our case } x_{1}=-5, y_{1}=2, x_{2}=3, y_{2}=\mathrm{r} \text { and } m=-\frac{1}{2}

On substituting the given value in (1) we get

\begin{array}{l}{-\frac{1}{2}=\frac{r-2}{3-(-5)}} \\\\ {\text { Solving the above expression to get value of } r} \\\\ {=>-\frac{1}{2}=\frac{r-2}{3+5}} \\\\ {=>-8=\frac{r-2}{3+5}} \\\\ {=>-8=2(r-2)} \\\\ {=>-8=2 r-4} \\\\ {=>2 r=-8+4} \\\\ {=>2 r=-4} \\\\ {=>r=\frac{-4}{2}=-2}\end{array}

Hence the value of "r" is -2

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3 years ago
Expand. Your answer should be a polynomial in standard form. (6x+1)(1-3x)
Ludmilka [50]

Answer:

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I used a triangle calculator to find side x

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3 years ago
What multiplies to -70 but adds to 3
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10 and -7 times each other equals -70.
10 plus -7 equals 3.
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I NEED HELP!!!<br> 3:8=_3
Neporo4naja [7]

Answer:

im here for points

Step-by-step explanation:

POINTS

try 3/8

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