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valentina_108 [34]
3 years ago
15

Find the x and y of x-3y=15 and -2x-4y=10

Mathematics
1 answer:
Minchanka [31]3 years ago
3 0

Use elimination to create a one variable equation.

 x-3y=15 -> 2x-6y=30

   2x-6y=30

+(-2x-4y=10)

------------------

-10y=40

Then solve (for y in this case).

y=-4

Now we can use the value for y to solve for x.

x-3y=15 -> x-3(-4)=15 -> x=3

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Elena is 56 inches tall. (Note: 100 inches = 254 centimeters)
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<h3>What is Elena's height in centimeters and meters?</h3>

The mathematical operations that would be used to determine the answers ae division and multiplication.

Division is the process of grouping a number into equal parts using another number. The sign used to denote division is ÷. Multiplication is the operation that is used to determine the product of two or more numbers.

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In order to determine the height in meters, first find the unit of conversion of inches to meters

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2 years ago
What does x equal? 2x-8=2x+6+x
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