Please, I need your help! Can someone answer this immediately!

Mathematics

1 answer:

Helga [31]2 years ago

5 0

Answer:

true false false true

Step-by-step explanation:

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A padlock for your gym locker uses a three number sequence to open the lock. if the numbers go from 1 to 28, how many different

aalyn [17]

Answer:

19,656

Step-by-step explanation:

Numbers used in locker = 3

Total numbers available = 28

Repetition is not allowed, so one number can be used only once. The order of number matters in the locker e.g. 123 password is not the same as 231. Since, the order of numbers matter, this is a problem of permutations. We need to find the number of different sequences formed with 28 numbers taken 3 at a time. This can be represented as 28P3

The formula for permutations is:

$^{n}P_{r}=\frac{n!}{(n-r)!}$

For the given case, we will have:

$^{28}P_{3}=\frac{28!}{(28-3)!}\\\\ = \frac{28!}{25!}\\\\ = 19656$

This means, 19,656 different 3 numbered sequences are possible for the locker.

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2 years ago

Solve the equation. x−8π=π x=

VladimirAG [237]

Add 8π to both sides

x-8π+8π=π+8π

x=π+8π

x=9π

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2 years ago

If x is a number that is 7 more than y, how do you express x as a function of y?

Tomtit [17]

Answer:

y = x - 7

Step-by-step explanation:

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2 years ago

Determine which tranlations would map Figure J onto Figure K

ella [17]

A translation right 5 units and up 4 units.

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6 months ago

A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained p

Alekssandra [29.7K]

Using the z-distribution and the formula for the margin of error, it is found that:

a) A sample size of 54 is needed.

b) A sample size of 752 is needed.

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $\alpha$ , we have the following confidence interval of proportions.