3 years ago

Estimate 20+ (-3.05)+(-9.8)

Mathematics

1 answer:

nekit [7.7K]3 years ago

8 0

Around 7.
Hope it helps!

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The diagram shows the rectangle ABCD, where A is (3,2) and B is (1,6).

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(i)
$A(3,2),B(1,6)
\\
\\m_{AB}= \frac{6-2}{1-3}=-2
\\
\\m_{BC}m_{AB}=-1
\\ 
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(ii)
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\\
\\C=AC\cap BC
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(iii)
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\\
\\d(A,B)= \sqrt{(1-3)^2+(6-2)^2}= \sqrt{20} =2 \sqrt{5} 
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