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Mumz [18]
3 years ago
12

One number is 1/2 as much as the other. Their sum is 54. What are the two numbers

Mathematics
1 answer:
sergeinik [125]3 years ago
8 0
The two numbers are 36 and 18.

18/36= 1/2
18+36= 54

Hope this helps~
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Solve the linear system of equations using the linear combination method.<br><br> {8a−4b=205a−8b=62
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Sorry I am a little late...

a = -2

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Here is how to solve the problem. 

First thing I did was multiply the first equation by -2 so that we can eliminate the the b. After you multiply it by -2, your new equation is -16a + 8b = -40. 

You leave the second equation alone and all you do is combine like terms. So -16a+5a is -11. And you eliminate the b. Then you're going to do -40+62 which is 22. So it's -11a=22 and then you have to solve for a. What I did was I multiplied the whole thing by minus to turn the a positive. So then it's 11a=-22. Pretty easy, the final step is to simplify. -22/11 is -2. ;D 

So there you have your first answer. 

a = -2 

Now we're going to use the first answer to help us find b. 

For the second equation, all you're going to do is plug in that a. 

5 (-2)-8b=62 

-10 - 8b = 62

Now we move the -10 to the other side...

-8b = 62 + 10 

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Multiply the whole thing by negative once again to turn the b positive.

Now we have 8b = -72 

The final step is to simplify. -72/11 = -9

b = -9 

Hope this makes sense! Also I had the same question on my test and I got it right. :)

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Answer:

Step-by-step explanation:

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drek231 [11]

Answer:

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Step-by-step explanation:

The slope-intercept form of an equation of a line:

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4y=-6x+8           <em>divide both sides by 4</em>

y=-\dfrac{6}{4}x+\dfrac{8}{4}

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