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Ivenika [448]
3 years ago
11

Solve the linear system using the method of substitution

Mathematics
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

y = -1

x = 9

(9, -1)

Step-by-step explanation:

1) Since "x" equals <em>-4y+5, </em>substitute that into the bottom equation for x: -4y+5+2y=7

2) Combine like terms: -2y+5=7

3) Subtract 5 from both sides: -2y=-2

4) Divide both sides by -2: y=-1

Now you have figured out that <em>y= -1 </em>

1) Substitute <em>-1 </em>for <em>y </em>in the top equation: x=-4(-1)+5

2) Solve: x=4+5

3) x=9

Now you have figured out that <em>x=9 </em>

<em />

The final answer is (9, -1)

Hope this helps! :)

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I need help with steps of solving this equation.
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Answer:

x = {-1/5, 1}

Step-by-step explanation:

(5x - 2)² - 1 = 8

Add 1 to both sides

(5x - 2)² = 9

Take the square root of both sides

5x - 2 = ±3

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

<u>Solution I</u> for 5x - 2 = +3

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add 2 to both sides

5x = 5

Divide both sides by 5

x = 1

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<u>Solution II</u> for 5x - 2 = -3

5x - 2 = -3

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5x = -1

Divide both sides by 5

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x = {-1/5, 1}

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Two large and 1 small pumps can fill a swimming pool in 4 hours. One large and 3 small pumps can also fill the same swimming poo
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Hope I helped! ☺

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Read 2 more answers
If 1 inch = 50 miles how many miles is 8.5 in
GenaCL600 [577]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ 8.5 in = 425 miles

If 1 mi = 50 inches, multiply by 8.5:

50 x 8.5 = 425

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

7 0
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