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2 years ago

5

it took a submarine 30 seconds to sink 225 feet, moving at a constant speed. The captain wants to know how much feet does he the

submarine sink in a second

1 answer:

icang [17]2 years ago

4 0

Answer:

Dont count me if I'm wrong but if you divide 225 by 30 you get 7.5

So your answer should be 7.5

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Glenn Andrews recently bought a new motorbike for $3,950. If he had to pay 6 percent sales tax on the

GalinKa [24]

The total amount of money he had to pay for the bike is $3,954.02 because 6 percent of 7 is 4.2

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3 years ago

Which table does not represent a function?

andrew-mc [135]

the correct option is answer choice D, because there are multiple 2's in the x column with different f(x) values.

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3 years ago

Folosind procedeul mersului invers afla pentru can numarul stiind ca: a) daca la acel numar aduni 1345 apoi scazi 155 obtii numa

earnstyle [38]

Yeah I think so you have to solve and break it down

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2 years ago

Simone has 20 bills. One fifth of the bills are hundreds, 1/4 of them are fifties, 1/10 of them are $20s. The rest of the bills

larisa [96]

If Simone has 20 bills, then:

1/5 of 20 = 4 [hundreds]
1/4 of 20 = 5 [fifites]
1/10 of 20 = 2 [$20s]

4 * 100 + 5 * 50 + 2 * 20 = 400 + 250 + 40 = 690 [out of $780]
4 + 5 + 2 = 11 [out of 20 bills]

So now we can easily find out she had 9 bills of tens - because 20 - 11 = 9 or because (780 - 690) ÷ 10 = 90 ÷ 10 = 9.

5 0

3 years ago

In the U.S., 95% of children have received their DTaP vaccine. Calculate the probability that fewer than 700 out of a sample of

Studentka2010 [4]

Answer:

0.0183

Step-by-step explanation:

The percentage of students, who received their DTaP vaccine is 95%.

This implies that:

$p = 0.95$

and

$q = 1 - 0.95 = 0.05$

The standard deviation of the proportion is

$= \sqrt{ \frac{pq}{n} }$

$= \sqrt{ \frac{0.95 \times 0.05}{750} } \\ = 0.00796$

We want to find the probability, that the sample proportion,

$\hat p \leqslant \frac{700}{750} \\ \hat p \leqslant 0.9 \bar3$

$P(\hat p\le0.9\bar3)=P(Z\le \frac{0.9 \bar3 - 0.95 }{0.00796} ) \\ = P(Z\le - 2.09) \\ = 0.0183$

5 0

2 years ago