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3 years ago

11

Bianca drove at 60 miles per hour for 1 1/2 hours. Collin drove 150 miles in 2 1/2 hours and Dale drove 105 miles in 1 1/3 hours

. Which statement is true?

1 answer:

d1i1m1o1n [39]3 years ago

8 0

Bianca's speed: 60 mph
<span>Colin's speed: (150)/(2.5) = 60 mph </span>
<span>Dave's speed: (105)/(7/4) = 60 mph
</span>

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Answer:

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Step-by-step explanation:

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Answer:

a) 0.5476

b) 0.0676

c) 0.4524

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Given this information, we can conclude that 74% of the cars won't need any repairs over a 1-year period (100 - 20 - 5 - 1 = 74%). And 26% will need at least 1 repair over a 1-year period.

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P (car needs repair) = 0.26

If you own two cars, the probability that:

<u>a) Neither will need repair:</u>

We need that car 1 won't need repair AND car 2 won't need repair.

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= 0.74 x 0.74 = 0.5476

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<u>b) Both will need repair:</u>

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P(Car 1 needs repair) x P(Car 2 needs repair)

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To solve this one, it's easier to use the complement of P(neither needs repair)

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Read 2 more answers

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Whitepunk [10]

The velocity v and maximum height h of the water being pumped into the air are related by the equation

v= $\sqrt{2gh}$

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Take square root on both sides

$v^2$ = 2gh

Divide by 2g on both sides

$\frac{v^2}{2g}$ = h

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