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olga55 [171]
3 years ago
9

The sum of three numbers is 87. The third number is 2 times the second. The first number is 7 more that the second. What are the

numbers?
Mathematics
1 answer:
Marysya12 [62]3 years ago
3 0
<span>19 + 57 + 9 = 85 
Do you need farther explaining</span>
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Answer:

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if x= -3

the denominator becomes 0 and the fraction becomes undefined.

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m=\frac{y_2-y_1}{x_2-x_1}

(1)

It is given that the line passes through the points (-a + 3, b - 3) and (a + 3, -b). So, the slope of the line is

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m_1=m_2

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On cross multiplication we get

4a=-6(6-a)

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Therefore the value of a is 18.

8 0
3 years ago
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