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alukav5142 [94]
3 years ago
8

Use substitution to solve the following system of equations. -2x + 4y = -18 AND x = y + 3

Mathematics
2 answers:
Annette [7]3 years ago
5 0

Answer:

x = -3    y = -6

Step-by-step explanation:

x = y + 3

x - 3 = y

-2x + 4(x - 3) = -18

-2x + 4x - 12 = -18

2x = -6

x = -3

x = y + 3

-3 = y + 3

-6 = y

loris [4]3 years ago
4 0

Answer:

x = -3 ; y = -6

Step-by-step explanation:

x = y + 3

-2x + 4y = -18

-2(y+3) + 4y = -18

-2y -6 + 4y = -18

2y = -12

y = -6

x = -6+3

x = -3

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Oksi-84 [34.3K]

Answer:

x=√-1/3 y^2 +3 or x=-√-1/3 y^2 +3

Step-by-step explanation:

Let's solve for x.

3x2+y2=9

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Step 2: Divide both sides by 3.

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8 0
3 years ago
Write the equation of the line, in standard form that has an x intercept at (3,0) and y
Nataly [62]
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  • y intercept=b=-2

We need the normal form first

\\ \rm\bull\rightarrowtail \dfrac{x}{a}+\dfrac{y}{b}=1

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6 0
2 years ago
Hey can someone help me out thank! :D ITS DUE TODAY PLZZZ!!!!
Pani-rosa [81]

Answer:

Hey can someone help me out thank! :D ITS DUE TODAY PLZZZ!!!!

1. Use the integer multiplication facts in their integer bubble to create six related integer division facts.

2.The quotient of any two integers (with a non zero divisor) will be a rational number. If and are integers, then - (p/q)= (---)=(----)

3. Mrs. McIntire, a seventh-grade math teacher, is grading papers. Three students gave the following responses to the same math problem: 1/-2 -(1/2) -1/2

4.On Mrs. McIntire’s answer key for the assignment, the correct answer is −0.5. Which student answer(s) is (are) correct? Explain.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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