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igomit [66]
3 years ago
8

Solve using substitution. y = -4x + 5 y = x + 10

Mathematics
2 answers:
rjkz [21]3 years ago
6 0

Lets turn the last equation into something x equals.

x = y - 10.

y = -4(y - 10) + 5

y = -4y + 40 + 5

y = -4y + 45

-5y = -45

y = 9

9 = -4x + 5

0 = -4x - 4

4x = -4

x = -1

The pair is (-1, 9) (x = -1, y = 9)

⭐ Please consider brainliest! ⭐

✉️ If any further questions, inbox me! ✉️

alisha [4.7K]3 years ago
4 0

Answer:

x=-1

Step-by-step explanation:

y=-4x+5

y=x+10

------------

-4x+5=x+10

-4x-x+5=10

-5x=10-5

-5x=5

x=5/-5

x=-1

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10n+m=18+n+m
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3 years ago
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tresset_1 [31]

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2 years ago
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X - 5 = 20 <br> x= <br><br> I need to know what the x equals
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Step-by-step explanation:

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3 years ago
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Please, can someone help?
LekaFEV [45]
The area of that figure is 2453.25 square feet

First, you would need to find the area of the rectangle

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3 years ago
Solve this system of equations using substitution:
irina [24]
The substitution method means you replace the variable in one equation with the other equation, so your new equation is x+4x-8=10. Add 10 to both sides to get 5x=18. Divide both sides by 5 to get x=3.6. This is a weird equation, but then to get y, work backwords. 3.6 times 2=7.2. 7.2-4=3.2 y=3.2. Finally to finish checking solve the equation as normal. 3.6+6.4=10. I hope this helped! Please give brainliest!
Your final answer is x=3.6 y=3.2
3 0
3 years ago
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