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3 years ago

Tell which equation you would choose to solve for one of the variables when solving the system by substitution. 2x+3y=5 4x-y=3

Mathematics

1 answer:

PtichkaEL [24]3 years ago

8 0

i would solve 4x-y =3 for y because the coefficient for y is 1

subtract 4x from each side

-y = -4x+3

divide by -1

y = 4x-3

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Rachel bought 7 cookies and 5 muffins. The equation 7c+5m=10.45 represents the amount of money she spent. Jack bought 3 cookies

malfutka [58]

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I got this by creating a systems of equations and I used the substitution method

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3 years ago

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Sergeeva-Olga [200]

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3 years ago

Janice has a summer job giving tours at the zoo. she earns $62.50 for every 5 tours a day. she is trying to earn $500 by the end

amid [387]

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7 0

3 years ago

Question 8 (2 points)

SashulF [63]

Answer:

$\mathbf{x=\frac{1}{2}}$ is the solution to the equation: $4x+12-8x=-1+2x+10$

The statement is true.

Option A is correct.

Step-by-step explanation:

We need to determine if $x=\frac{1}{2}$ is the solution to the equation: $4x+12-8x=-1+2x+10$

Solving the equation first to find value of x

$4x+12-8x=-1+2x+10$

Combining like terms:

$4x-8x+12=2x+10-1\\-4x+12=2x+9$

Subtracting 2x on both sides

$-4x+12-2x=2x+9-2x\\-4x-2x+12=9\\-6x+12=9$

Now, subtracting 12 on both sides

$-6x+12-12=9-12\\-6x=-3\\$

Divide both sides by -6

$\frac{-6x}{-6}=\frac{-3}{-6}\\x=\frac{1}{2}$

So, we get $\mathbf{x=\frac{1}{2}}$

Therefore we can say that $\mathbf{x=\frac{1}{2}}$ is the solution to the equation: $4x+12-8x=-1+2x+10$

The statement is true.

Option A is correct.

6 0

2 years ago

Read 2 more answers

You have 5,814 feet of rope that you need to cut into 27-foot sections. How many sections of rope will you have?

natta225 [31]

5814/27 = 215.33

215 x 27 = 5805

5814-5805 = 9

Answer is B 215 sections with 9 feet left over

8 0

2 years ago