How do you solve linear equations using substitution

Mathematics

1 answer:

GuDViN [60]3 years ago

4 0

You substitute the y from the second eqaution to the y in the first equation

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What is the distance between (1, -4) and (1, 18

Annette [7]

<h3>Answer: 22 units</h3>

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Explanation:

You can use the distance formula

$d = \sqrt{ (x_1-x_2)^2 + (y_1-y_2)^2}\\\\d = \sqrt{ (1-1)^2 + (-4-18)^2}\\\\d = \sqrt{ (0)^2 + (-22)^2}\\\\d = \sqrt{ 22^2}\\\\d = 22\\\\$

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A shorter method is to subtract the y coordinates and apply absolute value

So either |-4-18| = |-22| = 22

Or, |18 - (-4)| = |18+4| = |22| = 22

This method only works because the x coordinates are the same. We can also use this method if the y coordinates were the same with the x coordinates being different.

4 0

3 years ago

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aksik [14]

To solve this, you would take 13% of 28,540.
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Hope this helps.

7 0

3 years ago

What is the measurement of ∠G? Show your work.

san4es73 [151]

Answer:

x = 40

Step-by-step explanation:

The angles add to 180 degrees

30+110 +x = 180

Combine like terms

140 +x = 180

Subtract 140 from each side