2 years ago

Explain why the slope of the line drawn in part C must be negative.

Mathematics

1 answer:

Nonamiya [84]2 years ago

6 0

because it is a negative line in the graph

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8x-5y=15 <br>6x+4y=43<br>solve the system by any method

Sedbober [7]

Answer:

$x=\frac{275}{62}$ , $y=\frac{127}{31}$

Step-by-step explanation:

<h3>I will use the elimination method.</h3>

We want to make the X's the same:

$24x-15y=45$

$24x+16y=172$

Because the signs of the X's are the same we subtract the 2 equations to make:

(I put the second one on top of the 1st)

$31y=127$

So:

$y=\frac{127}{31}$

Substitute y into either equation 1 or 2:

(I chose equation 1)

$8x-5(\frac{127}{31})=15$

$8x=5(\frac{127}{31}) + 15$

$x=\frac{5(\frac{127}{31})}{8}$

So:

$x=\frac{275}{62}$

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2 years ago

I have a slope of -4 (m=-4), would that be negative four over positive one or would that be negative 4 over negative one?

katrin [286]

If you have a slope of -4 then it would be -4/1 because rise/run. If it were -4/-1 then the slope would be 4.

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3 years ago

Joseph ordered 17 yards of lumber to build a tree house. how many inches of lumber did he order?

masya89 [10]

Answer:

612 inches.

Step-by-step explanation:

1 yard = 36 inches.

17 * 36 =

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