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mart [117]
2 years ago
11

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalen

t to x from the second equation is substituted into the first equation.
3x + 2y = −21
x − 3y = 4

A. 3(3y + 4) + 2y = −21
B. 3(−3y + 4) + 2y = −21
C. 3x + 2(3y + 4) = −21
D. 3x + 2(−3y + 4) = −21
Mathematics
1 answer:
KATRIN_1 [288]2 years ago
7 0

Answer:

B

Step-by-step explanation:

when you subtact 3y on both sides

you get x = -3y+4

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Goryan [66]

Answer:

13 and 11

Step-by-step explanation:

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3 years ago
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Find an equation in point-slope form for the line having the slope m= -5 and containing the point (7,2).
Juli2301 [7.4K]

Answer:

y - 2 = - 5(x - 7)

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

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Here m = - 5 and (a, b) = (7, 2) , thus

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5 0
3 years ago
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A recipe for banana bread requires 5/8 cups of milk Julio wants to make 2/3 of the recipe how many cups of milk should Julio use
Advocard [28]
- Julio Should use 10/24 or 5/12 Cups Of Milk
3 0
3 years ago
How do solve this problem 2/3 (2/8 + 4/8) =
scoundrel [369]

Answer:

1/2

Step-by-step explanation:

2/3 (2/8 + 4/8) =

First simplify what is inside the parentheses

2/8+4/8 = 6/8

Replace with 6/8

2/3 (6/8) =

Then multiply

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6 0
3 years ago
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aliina [53]

x-2y = -2

x-2(-3x+8)=-2

mutiply the bracket by -2

(-2)(-3x)=6x

(-2)(8)=-16

x+6x-16=-2

7x-16=-2

move -16 to the other side

sign changes from -16 to +16

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7x= -2+16

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divide both sides by 7

7x/7=14/7

x=2

Find y by using the substitution method

y=-3x+8

y=-3(2)+8

-6+8

=2

Answer:(2,2)

6 0
3 years ago
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