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3 years ago

Solve and then answer the questions

Mathematics

1 answer:

denpristay [2]3 years ago

6 0

Answer:

71 and 19

Step-by-step explanation:

Numbers are x and y, equations below:

x + y = 90
x = 3y + 14

Substitute x in the first equation:

3y + 14 + y = 90

Solve for y:

4y + 14 = 90
4y = 76
y = 19

Find x:

x = 90 - 19 = 71

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14. Write a two-column proof.

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Given:

$\bold{ 8x=4y-20} \\\\ \bold{ y=13}$

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Solution:

$\to \bold{8x=4y-20}..........(i)\\\\\to \bold{ y=13}........................(ii)$

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putting the value x into the equation (i):

$\to \bold{8(4)=4y-20}\\\\\to \bold{32=4y-20}\\\\\to \bold{32+20=4y}\\\\\to \bold{52=4y}\\\\\to \bold{y=\frac{54}{4}}\\\\\to \bold{ y= 13.5}$

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Learn more:

brainly.com/question/6219408

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2 years ago

Can someone help me

tiny-mole [99]

Answer:

12 4 (12, 4)

18 6 (18, 6)

Step-by-step explanation:

On coordinate plane, the "add 6" column values are x-axis values and "add 2" column values are y-axis values.

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3 years ago

Solve and then answer the questions​

Solve and then answer the questions