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Roman55 [17]
3 years ago
5

S+2m=20 s-5=m substitution

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
7 0

Answer:

s = 10

Step-by-step explanation:

s + 2(s - 5) = 20

s + 2s - 10 = 20

s + 2s - 10 + 10 = 20 + 10

s + 2s = 30

3s = 30

3s/3 = 30/3

s = 10

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The remainder theorem states that:
If (x-a) is a factor of f(x), then f(x) / (x-a)  = 0


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Professor McCoy is wrong because he used (x + 2) when it should be (x-2). I know this because according to the factor theorem if f(a)=0, then (x-a) is a factor. And the remainder theorem says if (x-a) is a factor of f(x), then f(x)/x-a =0.

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4 years ago
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