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vovangra [49]
3 years ago
15

Rewrite the expression using Distributive Property, then simplify: -2(-x+3y)-3(x-5y)

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0
-2(-x + 3y) - 3(x - 5y)
-2(-x) - 2(3y) - 3(x) + 3(5y)
2x - 6y - 3x + 15y
2x - 3x - 6y + 15y
-x + 9y
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Y = 7x + 20<br> 4x - y = -11<br> solve by substitution
GuDViN [60]

Answer:

x = - 3, y = - 1

Step-by-step explanation:

y = 7x + 20 -----> equation 1

4x - y = - 11

4x - ( 7x + 20 ) = - 11

4x - 7x - 20 = - 11

- 3x = - 11 + 20

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x = 9 / - 3

x = - 3

Substitute x = - 3 in equation 1,

y = 7 ( - 3 ) + 20

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y = - 1

Hence,

x = - 3

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So when you inserts the coordinates in this formula, it would be \sqrt{(-2-3)^2+(-6-5)^2}

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Usually, distance is round to whole number. So, it would be 12

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Assuming the following two triangles are congruent, solve for x if QR =
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I think you meant the two <em>segments</em><em> </em>are identical, if so then:

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