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Lilit [14]
2 years ago
5

Help! |5 − x |− |x + 8| , if x > 5I just can't get it right.

Mathematics
1 answer:
MakcuM [25]2 years ago
7 0

Answer:

-13

Step-by-step explanation:

since x is positive, |x+8| becomes x+8. since x>5, 5-x is negative so |5-x| becomes x-5 (-(5-x)=-5+x=x-5). so now we have x-5-(x+8)=x-5-x-8=-5-8=-13

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3 years ago
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BartSMP [9]

Answer:

5+2*(7-4) =11

Step-by-step explanation:

This expression was kind of trial and error for me seeing as I'm not really good at logic, but this is pretty basic. There are three possible places the parentheses can be placed (assuming each pair holds 2 terms);

(5+2)*7-4\\5+(2*7)-4\\5+2*(7-4)

The answer to the first expression would be 45, which is not equal to 11.

The answer to the second expression would be 15, which is also not equal to 11.

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Hope this helped :D

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5 0
3 years ago
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Sav [38]

Answer:

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Step-by-step explanation:

When you see (f * g)(x), this means that we are going to be multiply f(x) and g(x) together.

<em>f(x)=8x</em>

<em>g(x)=2x+1</em>

Now, we multiply these terms together.

(8x)(2x + 1)

Use the foil method to multiply.

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Answer:

option A

Step-by-step explanation:

We can find the standard form by expanding the equation:

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So the correct option is option A

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