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3 years ago

What is the measure of angle ABC?

Mathematics

1 answer:

svlad2 [7]3 years ago

8 0

BE = BF
so <BEF = <BFE = 82
<FBE = 180 - 82 - 82 = 16
<ABF = <CBE = 180 - 82 = 98

so
<ABC = 360 - (98 = 16 + 98)
<ABC = 148

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Tomtit [17]

Answer:

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Step-by-step explanation:

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And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For our case we have this:

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Th excel figure attached shows the calculations for each sum.

$r=\frac{10(10609)-(269)(383)}{\sqrt{[10(8645) -(269)^2][10(15007) -(383)^2]}}=0.4437$

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3 years ago

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3 years ago