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3 years ago

12

If Cara spins a spinner two times, then what is the probability that she will land on A or B on her first spin and B, C, D, or E

on her second spin?

1 answer:

Lelechka [254]3 years ago

4 0

Answer:

1/6

Step-by-step explanation:

1 over 6 letters

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If Chad makes $10 per yard and $5 per hour, how much will he make if he works for 8 hours total in 3 yards?

kakasveta [241]

Chad makes $10 per yard, and he makes 3 yards

3 x 10 = 30

Chad makes $5 per hour, and he works 8 hours

5 x 8 = 40

30 + 40 = 70

Chad makes $70 in all

hope this helps

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3 years ago

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You are road tripping down the California coast and you notice you need to fill up your gas tank. In CA, sales tax is 2.25%. You

amid [387]

Answer:

<em>$1.26</em>

Step-by-step explanation:

So you just have to find 2.25% of 56.

To find a certain percentage of something, you multiply it. Let's write out a sentence explaining what you need to do. You have to find:

2.25% of 56

Whenever you've got a sentence like this, all you've got to do is change the word "of" to a multiplication symbol. And now you've got an expression:

2.25% × 56

Let's convert the percentage to a decimal. To do this, you simply remove the percent symbol, then move the decimal point 2 places to the left.

2.25% = 0.0225

And now you have:

0.0225 × 56

Then you just do the math! I am assuming you already know how to do decimal multiplication so I'm not going to explain the process here.

But once you multiply 0.0225 × 56, you get an answer: 1.26

Hope this was helpful to you, and don't forget to choose the Brainliest answer!

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2 years ago

(20 POINTS) Which of the following is a rational number?<br><br> Please solve fast!

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Answer: A.

Step-by-step explanation:

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3 years ago

Lindsay is checking out books at the library, and she is primarily interested in mysteries and nonfiction. She has narrowed her

Ratling [72]

Answer:

0.0677 = 6.77% probability that they will all be nonfiction

Step-by-step explanation:

The books are chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of successes.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

10 + 12 = 22 books.

She chooses 4 books, which means that $n = 4$

12 nonfiction, which meas that $k = 12$

What’s the probability that they will all be nonfiction?

This is P(X = 4). So

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 4) = h(4,22,4,12) = \frac{C_{12,4}*C_{10,0}}{C_{22,4}} = 0.0677$

0.0677 = 6.77% probability that they will all be nonfiction

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2 years ago

Please help me with this homework

lorasvet [3.4K]

You get the final solution. You wouldn’t need to simplify anything

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3 years ago

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