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Arlecino [84]
3 years ago
15

Solve the system or equations by substitution y= 3 2x- y = 7

Mathematics
2 answers:
allochka39001 [22]3 years ago
8 0
Answer: -5
2x=7+3
-2x=10
X=-5
Rzqust [24]3 years ago
8 0
Answer: x= 7/2+y/2

explanation: u have to move all the terms that don’t contain X to the right then solve
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How do u determine the equation of the line through each pair of points in slope-intercept form (y=mx+b). (3,0) and (2,4) (-6,3)
steposvetlana [31]

Answer:

Y =-4X +12

Y =-0.625X  -0.75

Step-by-step explanation:

(3,0) and (2,4)....

x1 y1  x2 y2

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~~~~~~~~~~~~~~~~~

(-6,3) and (2,-2)​

x1 y1  x2 y2

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6 0
3 years ago
Informal letter<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B32%7D%20" id="TexFormula1" title=" \sqrt{32} " alt=" \sqrt{32}
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2 years ago
5 (u + 1) -<br>7 = 3<br>3 (u - 1) + 2u​
frez [133]

Correct Question:

5 (u + 1) - 7  = 3 (u - 1) + 2u.

Solve for u

Answer:

See explanation below

Step-by-step explanation:

In this given question, we are required to find u.

Given the equation:

5 (u + 1) - 7 = 3 (u - 1) + 2u​

Required:

Solve for u

To find u, first simplify both sides individually.

Simply 5 (u + 1) - 7:

Expand the parenthesis:

5u + 5 - 7

Collect like terms:

5u - 2

<em>Simplify 3 (u - 1) + 2u​:</em>

Expand the parenthesis:

3u - 3 + 2u

Collect like terms:

3u + 2u - 3

5u - 3

Bring both simplified equations together:

5u - 2 = 5u - 3

5u - 5u - 2 = -3

-2 = -3

Since -2 ≠ -3, there is no solution.

Therefore, we can say the equation is invalid.

3 0
3 years ago
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