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Fittoniya [83]
3 years ago
7

What is the answer for -5( -4g+8)-9g

Mathematics
1 answer:
marin [14]3 years ago
3 0

Answer:

11g - 40

Step-by-step explanation:

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Quadratic Equation
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Step-by-step explanation:

The sum of ages of two friends is 13 years.

The product of their ages is 42.

<em>Let the age of 1st friend and 2nd friend is x, y respectively.</em>

<em>1 st condition= The sum of ages of two friends is 13 y</em><em>r</em><em>s. </em>

i.e x+y = 13........ (I)

<em>2nd condition= The product of their ages is 42.</em>

i.e X*y = 42........(ii)

From equation (I)

X+y = 13

or, X = 13-y........ (iii)

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X*y= 42

(13-y) * y = 42

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(y - 6) (y - 7) = 0

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Or;

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<em>Keeping the value of y as "7" in equation (ii)</em>

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X = 42/7

Therefore, the value of X is 6.

Therefore, either 1st friend is 6 years and 2nd is 7 years.

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3 years ago
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