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Mashutka [201]
4 years ago
12

Solve the system of linear equations by using substitutions

Mathematics
1 answer:
Liono4ka [1.6K]4 years ago
7 0
Start by placing the second equation in for Y so you have 
2x+2(5+x)=10
Then distribute the 2
2x+10+2x=10
Then combine like terms 
4x+10=10
Then subtract the 10 over
4x=0
Then divide the 4 and because 0 divided by 4 is 0
x=0
Then plug it back into one, Ill choose the second
y=5+0
Then add 5+0 and you get y=5
Your solution is (0,5)

Hope I Helped! :) <3 
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6 0
2 years ago
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Farmer Johnson raises cows and chickens. For some reason he does not remember how many of each
posledela
There are 38 chickens and 16 cows.
38 times 2 equals 76 and 16 times 4 equals 64. 64 plus 76 equals 140.
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4 years ago
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Slope and y-intercept of the graph of 25x -20y =100
tankabanditka [31]

Step-by-step explanation:

First, we need to put this standard form into slope-intercept form

To do this you need to move the "y" to all by itself

-25x+25x-20y=100-25x

-20y=100-25x

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Answer:

y=5/4x-5

8 0
3 years ago
Ratio to percent 16:25
Tamiku [17]
<h3>Solution:</h3>

By multiplying it by 100, we can get the answer.

<h3>Given Ratio:</h3>

\huge \purple {\tt {16:25}}

<h3>Converting it into Percent, we get</h3>

\huge \pink {\tt { \frac{16}{25}  \times 100}}

\huge \red {\tt {= 16 \times 4}}

\huge \green {\tt {= 64\%}}

<h2>Answer: 64%</h2>
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Answer:

60°

Step-by-step explanation:

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