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3 years ago

Divide 72 ft in the ratio 9:4:5

1 answer:

5 0

9:4:5.....added together = 18

9/18 (72) = 648/18 = 36
4/18 (72) = 288/18 = 16
5/18 (72) = 360/18 = 20

so we have 36:16:20

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Step-by-step explanation:

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Vinvika [58]

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Step-by-step explanation:

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Part a

We are interested on this probability

$P(X>106.11)$

And we can use the z score formula given by:

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And using this formula we got:

$P(X>106.11)=P(\frac{X-\mu}{\sigma}\frac{106.11-106}{0.3})=P(z>0.37)$

And we can find this probability with the complement rule:

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$z =\frac{106.11- 106}{\frac{0.3}{\sqrt{44}}}= 2.431$

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Read 2 more answers