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2 years ago

15

If it takes Mathew an hour to get to his friends house and 2 hours if he drives 25mph slower, how far away does Mathew’s friend

live?

1 answer:

Zinaida [17]2 years ago

8 0

50 mph

1*(S)=2*(S-25)=S=2S-50=0=S-50=S=50

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A survey showed that 77% of adults need correction for their eyesight.

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We are supposed to find $P(x\leq 11)$

$P(x\leq 11)=P(x=1)+P(x=2)+P(x=3)+.....+P(x=11)$

Formula : $P(x=r)=^nC_r p^r q^{n-r}$

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Using calculator

$P(x\leq 11)=0.00512$

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