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Lesechka [4]
1 year ago
12

I need help with question 18.This is a homework question!

Mathematics
1 answer:
EastWind [94]1 year ago
7 0

The expression is,

7y+11=-17

let us solve the expression.

\begin{gathered} 7y+11=-17 \\ 7y=-17-11 \\ 7y=-28 \\ y=-\frac{28}{7} \\ y=-4 \end{gathered}

the answer is

7y+11=-17,y=-4

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Combine the radicals. 3√5-8√5+2√5
weeeeeb [17]

Answer:  -3\sqrt{5}

-3 times the square root of 5

=============================================

Explanation:

Let x = \sqrt{5}

Replace all the root 5 terms with x and we go from

3\sqrt{5}-8\sqrt{5}+2\sqrt{5}

to

3x-8x+2x

From here, combine like terms to get

3x-8x+2x = -5x+2x = -3x

and the last thing to do is replace the x with sqrt(5)

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Meaning that,

3x-8x+2x = -3x

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7 0
3 years ago
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Rus_ich [418]

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