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Slav-nsk [51]
2 years ago
9

Ali needs $60 to purchase a flute. She has $32. She can earn $4 an hour babysitting. Which equation could be used to find h, the

number of hours Ali needs to babysit to earn enough money to purchase the flute?
A. 60=(32 x 4)h

B. 60=(32 x 4)h

C. 60=(32 + 4)h

D. 60=(32 - 4)h

PLS HELP FAST​
Mathematics
1 answer:
Dima020 [189]2 years ago
3 0

Answer:

A formula to express this would be:

60 = 32 + 4h

This simplifies down to 7 for h

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Answer:

The answer is 81.

Step-by-step explanation:

Since the power of 4 is even, the result will be positive.

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3 years ago
The Census Bureau's Current Population Survey shows that 28% of individuals, ages 25 and older, have completed four years of col
gizmo_the_mogwai [7]

Answer:

19.35% probability that five will have completed four years of college

Step-by-step explanation:

For each individual chosen, there are only two possible outcomes. Either they have completed fourr years of college, or they have not. The probability of an adult completing four years of college is independent of any other adult. So the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

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

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And p is the probability of X happening.

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This means that p = 0.25

For a sample of 15 individuals, ages 25 and older, what is the probability that five will have completed four years of college?

This is P(X = 5) when n = 15. So

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