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zhenek [66]
2 years ago
10

1. At which ordered pair on a graph will the following system of a linear equations intersect?

Mathematics
1 answer:
Gekata [30.6K]2 years ago
6 0

Answer:

D. (-7, -9)

Step-by-step explanation:

<u>Equation 1</u> : -5x + 5y = -10

<u>Equation 2</u> : -3x + 2y = 3

<u>Multiply Equation 1 by 2 and Equation 2 by 5.</u>

  • -10x + 10y = -20 [Equation 3]
  • -15x + 10y = 15 [Equation 4]

<u>Subtract Equation 4 from Equation 3.</u>

  • -10x + 10y + 15x - 10y = -20 - 15
  • 5x = -35
  • x = -7

  • -3(-7) + 2y = 3
  • 2y = -18
  • y = -9

<u>Solution</u>

  • (-7, -9)
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Mamont248 [21]

Answer:  D.  (-4, -2)

<u>Step-by-step explanation:</u>

Rotating 180° about the origin means the signs for the x- and y-values are opposite.

(x, y) → (-x, -y)

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Step-by-step explanation:

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3 years ago
Find angles a, b and c? <br> Please help.
laiz [17]

Answer:

B=112 degrees A=68 degrees and C=68 degrees

Step-by-step explanation:

the opposite angle of the 112-degree angle is the angle on the top left of the page, this means both of the angles are the same. You can then tell that that angle is the same as the one across from it because it shows on the page.  You can then figure out the opposite angle which is B so that means angle B is equal to 112 degrees. To figure out angle A you can just do 180 minus the angle B which is 112 degrees. You now know angle A which is 68 degrees, now to find the angle C you just have to notise that angle C is the opposite angle of angle A. This means that algle C is also 68 degrees.

8 0
3 years ago
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Josh ate 7/8 pizza and Jerry ate 1/2 pizza. how much more did Josh eat then Jerry​
xz_007 [3.2K]

Step-by-step explanation:

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3 years ago
Area of the figure: A)128 B)136 C)153 C)258
GarryVolchara [31]

Answer: 153

Step-by-step explanation:

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=1/2(16+5)x 10

=105

105+48= <u>153 in^2</u>

3 0
3 years ago
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