3 years ago

Which system of equations has the same solution as the system below?

Mathematics

2 answers:

Dima020 [189]3 years ago

5 0

The answer would be B because you would just multiply the 3x -y =4 by a positive 2 so they can be opposite.

bearhunter [10]3 years ago

5 0

Answer: the answer to this question is part B

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Write an equivalent expression for 5(2x + y - 3z) by modeling and using the distributive property.

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The answer is 10x + 5y - 15z

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3 years ago

Read 2 more answers

(2x-7)-(4x^2+6x-3)+(x^2+4)

masha68 [24]

Answer:

$-3x^2-4x$

Step-by-step explanation:

Simplify:

$\left(2x-7\right)-\left(4x^2+6x-3\right)+\left(x^2+4\right)$

$=2x-7-\left(4x^2+6x-3\right)+x^2+4$

Group same factor:

$=-\left(4x^2+6x-3\right)+x^2+2x-7+4$

Add :

$=-\left(4x^2+6x-3\right)+x^2+2x-3$

Apply the distributive law: -(a+b) = -a - b

$-\left(4x^2+6x-3\right)=-4x^2-6x+3$

$=-4x^2-6x+3+x^2+2x-3$

Group same factor:

$=-4x^2+x^2-6x+2x+3-3$

Subtract:

$=-4x^2+x^2-6x+2x$

Add:

$=-3x^2-6x+2x$

Group same factor:

$=-3x^2-4x$

Hence answer = $-3x^2-4x$

~lenvy~

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2 years ago

M is the midpoint of AN, A has coordinates (7, -4) and M has coordinates (3, 2) Find the coordinates of N.

Crank

Well if you use graph paper you can graph the points you already have and then you can find the slope of the line easiest that way, the next point would be. (-1,8)

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3 years ago

Plzz help me with this question

Aleks04 [339]

Answer: 45

Step-by-step explanation:

Complemntary angles result in a sum of 90. So, H=45 means

45+J=90

90-45= 45

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3 years ago

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Sidana [21]

Answer:

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Step-by-step explanation:

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3 years ago