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2 years ago

What is the answer to: y=-2x-5,4x+3y=15 using substitution to solve it..??

Mathematics

1 answer:

MrRa [10]2 years ago

4 0

Answer:

Step-by-step explanation:

Plug the first equation into the second

$4x+3(-2x-5)=15\\4x-6x-15=15\\-2x=30\\x=-15$

y=-2(-15)-5

=30-5

=25

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Answer:

11259.5

Step-by-step explanation:

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2 years ago

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Rectangle measures 10 inches by 5 inches. Rectangle B is a scaled copy of Rectangle Select all of the measurement pairs that cou

Reika [66]

Answer:

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Step-by-step explanation:

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2 years ago

Please help with 3. 4. 5.

Eddi Din [679]

3.
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4.
$r-6+3r-3+5r=180\\9r-9=180\ \ \ |+9\\9r=189\ \ \ |:9\\r=21$
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5.
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4 0

3 years ago

(1-x)(x+4)(x-5) <br><br> expand and simplify

insens350 [35]

-x^3+2x^2+19x-20

have a good day

7 0

3 years ago

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I do not need the answer. I need the equalivent to 5= 4z+ 13...... what is another way to write this. What is the equalivant

8090 [49]

Answer:

A few examples of equivalent equations are:

4z = 5 - 13

4z = -8

z = -2

Step-by-step explanation:

5 = 4z + 13

Rewrite the equation by subtracting 13 from both sides

4z = 5 - 13

4z = -8

Hope this was useful to you!

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2 years ago

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