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Nikolay [14]
4 years ago
5

What percentage is 15 out of 20​

Mathematics
2 answers:
MariettaO [177]4 years ago
6 0
The answer would be 75%.
Serjik [45]4 years ago
4 0

Answer:

75%

Step-by-step explanation:

15/20=x/100

15 divided by 25 is 0.75 percent.

You want to iscolate the variable, so you times a 100 to each side. that leaves 75%=x. Hope it helps!

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A basketball player has made​ 70% of his foul shots during the season. If he shoots 3 foul shots in​ tonight's game, what is the
yulyashka [42]

Answer:

There is a 34.3% probability that he makes all of the​ shots.

Step-by-step explanation:

For each foul shot that he takes during the game, there are only two possible outcomes. Either he makes it, or he misses. This means that we use the binomial probability distribution to solve this problem.

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 combinatios 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.

In this problem we have that:

n = 3, p = 0.7

What is the probability that he makes all of the​ shots?

This is P(X = 3).

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

P(X = 3) = C_{3,3}.(0.7)^{3}.(0.3)^{0} = 0.343

There is a 34.3% probability that he makes all of the​ shots.

7 0
3 years ago
Please help with #19!
ikadub [295]

Answer:

a) yes

b) 2560

Step-by-step explanation:

An exponential function has a common ratio between points uniformly spaced. Here, the data points are 10 years apart.

The ratio of the first two values is 4000/5000 = 0.8.

The ratio of the next two values is 3200/4000 = 0.8.

These ratios are the same, so the data is consistent with an exponential function.

The common ratio can be used to predict the next value. The next value is predicted to be ...

  3200 × 0.8 = 2560

8 0
4 years ago
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Sergeeva-Olga [200]
That would be 6 *3 - 8*0  = 18

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5 0
3 years ago
HELP!!
torisob [31]

195 is the answer because you replace x with 10

Step-by-step explanation:

825-630=195

3 0
3 years ago
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A starfish's top speed is approximately 161 centimeters per minute. What is this speed to the nearest centimeter per second? plz
Papessa [141]

2.7 cm per second. Because it’s 161 divided by 60

6 0
4 years ago
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