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3 years ago

A, B, C , Or D (Select all that apply)

Mathematics

1 answer:

bulgar [2K]3 years ago

6 0

A) (1,5) shows that one hat cost $5.00
C) (3,15) shows that three hats cost $15.00

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School taxes for a local district are 2.5% of a household's income. The Smith household earns $80,000 per year. How much do the

Alex

Since 2.5% as a decimal is .025, the equation to get this is:

(.025)(80000)

Once multiplied, these equal 2,000. Or in other words, the Smiths pay $2,000 in school taxes per year.

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3 years ago

Select all of the following models which represent a uniform probability model:

yulyashka [42]

Uniform in this sense means fair or even...

flipping a balanced coin, rolling a fair number cube, and both randoms i believe

6 0

3 years ago

Read 2 more answers

A track star runs two races on a certain day. The probability thathe wins the first race is 0.7, the probability that he wins th

NARA [144]

Answer:

a) 80% probability that he wins at least one race.

b) 30% probability that he wins exactly one race.

c) 20% probability that he wins neither race.

Step-by-step explanation:

We solve this problem building the Venn's diagram of these probabilities.

I am going to say that:

A is the probability that he wins the first race.

B is the probability that he wins the second race.

C is the probability that he does not win any of these races.

We have that:

$A = a + (A \cap B)$

In which a is the probability that he wins the first race but not the second and $A \cap B$ is the probability that he wins both these races.

By the same logic, we have that:

$B = b + (A \cap B)$

The probability that he wins both races is 0.5.

This means that $A \cap B = 0.5$

The probability that he wins the second race is 0.6

This means that $B = 0.6$

$B = b + (A \cap B)$

$0.6 = b + 0.5$

$b = 0.1$

The probability that he wins the first race is 0.7.

This means that $A = 0.6$

$A = a + (A \cap B)$

$0.7 = a + 0.5$

$a = 0.2$

A) he wins at least one race.

This is

$P = a + b + (A \cap B) = 0.2 + 0.1 + 0.5 = 0.8$

There is an 80% probability that he wins at least one race.

B) he wins exactly one race.

This is

$P = a + b = 0.2 + 0.1 = 0.3$

There is a 30% probability that he wins exactly one race.

C) he wins neither race

Either he wins at least one race, or he wins neither. The sum of these probabilities is 100%.

From a), we have that there is an 80% probability that he wins at least one race.

So there is a 100-80 = 20% probability that he wins neither race.

6 0

3 years ago

You are on vacation and want to buy a pair of sunglasses for $10 or less. You find a pair with a price tag

enyata [817]

I notice that The price is higher than the original price
And I wonder it is because of the tax?

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3 years ago

What is36.8+[11.6-(2.5×3)]2

givi [52]

Answer:

Step-by-step explanation:

The answer is 33.4

4 0

3 years ago