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3 years ago

Solve using substitution. 8x + 5y = 4 x = 3 What is x and y?

Mathematics

2 answers:

Sloan [31]3 years ago

6 0

Answer: y=-4

Step-by-step explanation:

8(3)+5y=4

24+5y=4

subtract each side by 24

5y=-20

divide by 5

5 y=-4

solong [7]3 years ago

5 0

Answer: x = 3 : y = -4

Step-by-step explanation:

8x + 5y = 4

8(3) + 5y = 4

5y = 4 - 8(3)

5y = 4 - 24

5y = -20

(5y)/5 = -20/5

y = -4

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3 years ago

Use the image below to determine the type of angle pair, relationship, value of x, and the missing angle measure.

Andrew [12]

Solution: x=5, top angle=80, bottom angle=100

Step by step solution:
Since they are same side interior angles they are equal to 180 so we can set up an equation.
19x+5+17x-5=180
36x=180
x=5
Then plug in the x value in the original equations
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Hope that helps :)

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