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3 years ago

Help ASAP

Mathematics

2 answers:

Alla [95]3 years ago

8 0

Answer: 1.14

Step-by-step explanation:

AfilCa [17]3 years ago

5 0

Answer:

since it has a diameter of 6, its radius must be half that or 3.

Step-by-step explanation:

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Brooke was the high scorer on her basketball team, making 15 baskets out of 25 shots attempted. What was her percent of success

alukav5142 [94]

Answer:

She had a success rate of 60 %.

Step-by-step explanation:

In order to calculate her percentage of success we need to take the total amount of shots she made and divide it by the total amounts of shots she attempted and multiply it by 100. Since she took 25 shoots and made 15, we have:

percentage of success = (15/25)*100% = 0.6*100% = 60 %

She had a success rate of 60 %.

4 0

3 years ago

Assume that when adults with smartphones are randomly selected, 58% use them in meetings or classes. If 10 adult smartphone us

Tasya [4]

Answer:

79.85% probability that at least 5 of them use their smartphones in meetings or classes.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they use their smartphone during meetings or classes, or they do not. The probability of an adult using their smartphone in these situations are independent of other adults. So we use the binomial probability distribution 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.

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

And p is the probability of X happening.

Assume that when adults with smartphones are randomly selected, 58% use them in meetings or classes.

This means that $p = 0.58$

10 adults selected.

This means that $n = 10$

Find the probability that at least 5 of them use their smartphones in meetings or classes.

$P(X \geq 5) = P(X = 5) + P(X = 6) + P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10)$

In which

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

$P(X = 5) = C_{10,5}.(0.58)^{5}.(0.42)^{5} = 0.2162$

$P(X = 6) = C_{10,6}.(0.58)^{6}.(0.42)^{4} = 0.2488$

$P(X = 7) = C_{10,7}.(0.58)^{7}.(0.42)^{3} = 0.1963$

$P(X = 8) = C_{10,8}.(0.58)^{8}.(0.42)^{2} = 0.1017$

$P(X = 9) = C_{10,9}.(0.58)^{9}.(0.42)^{1} = 0.0312$

$P(X = 10) = C_{10,10}.(0.58)^{10}.(0.42)^{0} = 0.0043$

$P(X \geq 5) = P(X = 5) + P(X = 6) + P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10) = 0.2162 + 0.2488 + 0.1963 + 0.1017 + 0.0312 + 0.0043 = 0.7985$

79.85% probability that at least 5 of them use their smartphones in meetings or classes.

3 0

4 years ago

Julie and 3 friends share 6 cheesecakes equally. How many cheesecakes will each get?

hodyreva [135]

They would get 1 cheesecake a piece and there would be 2 left and if they used that then they would have to cut that into 4 pieces for both cheesecakes and they would have 1 2/8 of cheesecake

4 0

3 years ago

Identify the domain of the exponential function shown in the following graph:

NemiM [27]

The domain is the set of values of the x-axys.

As per your description of the function, it goes from negative infinity to positive infinity.

6 0

3 years ago

Help me with this thanksss

babymother [125]

Answer:

Step-by-step explanation:

it is a trust meeeeeeeee

5 0

3 years ago