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nasty-shy [4]
3 years ago
14

Find two numbers whose sum is 67 and whose difference is 13

Mathematics
2 answers:
Gnom [1K]3 years ago
7 0
<span>You have to solve this system of equations to get the answer. One way you could go about that would be to add the systems together. This will eliminate the y and turn it into a single variable algebra problem. x+y=42 x-y=16 ------- 2x = 58 Once you solve that for x, you can plug that result back in to either of the first two equations and solve for y.</span>
goblinko [34]3 years ago
5 0
I believe it's 40 and 27
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with the less than or equal to sign (≤) , you use a <u>solid line</u> to graph


With the<u> greater than</u> symbol for y > -2 , the shaded region must be <em>above </em>this line.

With the <em>less than </em>or equal to sign in y ≤ - l x-1 l , the shaded region must be <em>below </em>the line.


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