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harkovskaia [24]
3 years ago
14

With the substitution method, explain how you find the value of the second variable once you have determined the value of one of

the variables
Mathematics
1 answer:
Luden [163]3 years ago
7 0

Once you have found the value of one of the variables(let's say x), you can substitute the value of the variable(x) into the variable(x) of one of the original equations to find the second variable.



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Find the measure of AB if B is the midpoint of AC and AB = 2x - 4 and AC = 28
yarga [219]

Answer:

AB=14

Step-by-step explanation:

First you write the equation 2(2x-4)=28 because if b is the midpoint then AB is half of the line so you multiply that half by two the make it equal to the whole line.

Then you distribute the two and get 4x-8=28.

Then you add 8 to 28 and get 36.

Then you divide 36 by 4 because the 4 and x are being multiplied together so you have to divide to get them apart.

So then you get x=9 and you aren't done yet because you have to plug x into 2x-4.

So it is 2(9)-4 which is 18-4 which equals 14.

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3 years ago
What two other forms to write 8.517
Lena [83]
8.517 in written form is: 

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8.517 in expanded form is:

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<span>Hope I Helped You!!! :-)

Have A Good Day!!!</span>
3 0
3 years ago
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natta225 [31]

i think the answer is A.

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S_A_V [24]

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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