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katrin2010 [14]
3 years ago
9

X+y=8 solve by substitution and Y=3x with substitution too

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

x=2

Step-by-step explanation:

Convert the Y to 3x since we know that y=3x.

You would get x+3x=8.

Add the x and 3x to get 4x

Then, you would get 4x=8.

Divide by 4 on both sides to get x=2.

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The required expression would be  

Step-by-step explanation:

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2 years ago
What is the answer? -9=3+6x
HACTEHA [7]
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6 0
3 years ago
The Crayola crayon company can make 2400 crayons in 4 minutes. How many crayons can they make in 15 minutes? Solve this problem
densk [106]
So, The Crayola Crayon company can make 2400 crayons in 4 minutes. In other words, every 4 minutes they can make 2400 crayons, right? So, in 15 minutes how many would they have made? Well, what we do is we divide 15 by 4 which is 3.75. Then we multiply the result, 3.75, by 2400. 3.75 * 9000. So, in 15 minutes, Crayola  would have made 900 crayons!

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Step 1: Cross Multiply

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