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3 years ago

15

There are three white marbles and seven blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without repla

cing the first marble chosen. What is the probability of jamie picking two white marbles?

1 answer:

Goryan [66]3 years ago

8 0

The probability of Jamie picking a blue marble is greater. The ratio of this probability would be 7:3

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Jason wrote this expression to describe the total amount he will spend on a magazine and a book.

kati45 [8]

The 11 may represent the price of the magazine if all the magazines at a certain store are $11. Then the s may represent the price of a book because all the books at a bookstore are different prices.

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3 years ago

Read 2 more answers

The distance from the ground of a person riding on a Ferris wheel can be modeled by the equation d equals 20 times the sine of t

kodGreya [7K]

We have the function d, representing the distance from the ground of a person riding on a Ferris wheel:

$d(t)=20\sin (\frac{\pi}{30}t)+10$

If we consider the position of the person at t = 0, which is:

$d(0)=20\sin (\frac{\pi}{30}\cdot0)+10=20\cdot0+10=10$

This position, for t = 0, will be the same position as when the argument of the sine function is equal to 2π, which is equivalent to one cycle of the wheel. Then, we can find the value of t:

$\begin{gathered} \sin (\frac{\pi}{30}t)=\sin (2\pi) \\ \frac{\pi}{30}\cdot t=2\pi \\ t=2\pi\cdot\frac{30}{\pi} \\ t=60 \end{gathered}$

Then, the wheel will repeat its position after t = 60 seconds.

Answer: 60 seconds.

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1 year ago

Which 2 statements are correct

GaryK [48]

A would be the correct ans

4 0

3 years ago

50% of 80<br> 50% of 48<br> 50% of 15<br> 25% of 120<br> 25% of 90

Semenov [28]

1. 40
2. 24
3. 7.5
4. 30
5. 22.5

3 0

3 years ago

Given the following data, find the weight that represents the 53rd percentile.

Volgvan

Answer:

Step-by-step explanation:

Rearranging the weights in ascending order, it becomes

5.4, 5.7, 5.7, 5.8, 6.0, 6.6, 7.1, 7.1, 7.5, 7.5, 8.1, 8.7, 9.3, 9.4, 9.4

The formula for determining the percentile is expressed as

n = (P/100)N

Where

n represents the value of the given percentile

P represents the given percentile

N represents the number of items(weights)

From the information given, the number of items, n is 15

P = 53

Therefore,

n = (53/100) × 15

n = 7.95

n = 8

Therefore, the weight that represents the 53rd percentile is the 8th value. It becomes 7.1

53rd percentile is 7.1

3 0

3 years ago