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Vitek1552 [10]
2 years ago
6

Solve each proportion 3 = 72 – 7​

Mathematics
1 answer:
Vanyuwa [196]2 years ago
4 0
1. 504=3x
x=168

2. 64=20m
m=3.2
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At a dog park, there are 10 black dogs, 5 brown dogs, 2 white dogs, and 12 multi-color dogs.
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What is the first step to solve the following system of equations using substitution?
Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

x = 4, y = 5

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

x - y = -1

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Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

x-y=-1

Add y to both sides

x-y+y=-1+y

x=-1+y

Thus, option A) is true.

<u>NOW LET US SOLVE THE REMAINING PORTION</u>

\mathrm{Subsititute\:}x=-1+y to solve for y

\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}

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y=5

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substitute y = 5

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Thus, the solution to the system of equations be:

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3 years ago
10 to the zero power times 0.23=
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The answer is 0.23. Ned an explanation
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