GIVING BRAINLIES, PLS HELP !!! :(

Mathematics

1 answer:

IgorLugansk [536]3 years ago

8 0

Answer:

Step-by-step explanation:

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Please help... 12! - 9^3

Naily [24]

Answer:

-729

Step-by-step explanation:

$-9^3 = -9 x (-9) x (-9) =$

$-9x(-9) = 81$

$81x(-9)=-729$

4 0

3 years ago

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3 plus the product of 2 and h

Ket [755]

I'm pretty sure it should be 2h+3

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3 years ago

If five numbers are selected at random from the set {1,2,3,...,20}, what is the probability that their minimum is larger than 5?

Zanzabum

Answer:

the probability that their minimum is larger than 5 is 0.2373

Step-by-step explanation:

For calculate the probability we need to make a división between the total ways to selected the 5 numbers and the ways to select the five numbers in which every number is larger than 5.

So the number of possibilities to select 5 numbers from 20 is:

20 * 20 * 20 * 20 * 20

First number 2nd number 3rd number 4th number 5th number

Taking into account that a number can be chosen more than once, and the order in which you select the numbers matters, for every position we have 20 options so, there are $20^{5}$ ways to select 5 numbers.

Then the number of possibilities in which their minimum number is larger than 5 is calculate as:

15 * 15 * 15 * 15 * 15

First number 2nd number 3rd number 4th number 5th number

This time for every option we can choose number from 6 to 20, so we have 15 numbers for every option and the total ways that satisfy the condition are $15^{5}$