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ziro4ka [17]
3 years ago
14

Find two numbers whose sum is 20 and difference is 1

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
6 0
Divide 20 by 2
20/2 = 10
Add and subtract 0.5* from 10
10 + 0.5 = 10.5
10 - 0.5 = 9.5
Those two numbers are your answer.

*The reason why we used 0.5 because the difference is 1, so divide 1 by 2.

Have an awesome day! :)
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17) The coordinates of quadrilateral EFGH are E(7, 7), F(4, 8), G(2, 2), H(7, 2). Show that EF is perpendicular to FG.
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see explanation

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first we calculate the slopes of EF and FG using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

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