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3 years ago

Due at 6:00 where i live help plz plz plz HELP reward brainliest

Mathematics

2 answers:

Natalija [7]3 years ago

8 0

Answer:im not sure what u mean

Step-by-step explanation:

ahrayia [7]3 years ago

6 0

Answer:

7. 45, 60, 75

8. id k sorry

9. 40, 135, 165

10. 15, 20

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In a shipment of 20 packages, 7 packages are damaged. The packages are randomly inspected, one at a time, without replacement, u

horsena [70]

Answer:

$\large\boxed{\large\boxed{0.119}}$

Explanation:

You need to find the probability that exactly three of the first 11 inspected packages are damaged and the fourth is damaged too.

1. Start with the first 11 inspected packages:

a) The number of combinations in which 11 packages can be taken from the 20 available packages is given by the combinatory formula:

$C(m,n)=\dfrac{m!}{m!(m-n)!}$

$C(20,11)=\dfrac{20!}{11!\cdot(20-11)!}$

b) The number of combinations in which 3 damaged packages can be chossen from 7 damaged packages is:

$C(7,3)=\dfrac{7!}{3!\cdot(7-3)!}$

c) The number of cominations in which 8 good packages can be choosen from 13 good pacakes is:

$C(13,8)=\dfrac{13!}{8!\cdot(13-8)!}$

d) The number of cominations in which 3 damaged packages and 8 good packages are chosen in the first 11 selections is:

$C(7,3)\times C(13,8)$

e) The probability is the number of favorable outcomes divided by the number of possible outcomes, then that is:

$\dfrac{C(7,3)\times C(13,8)}{C(20,11)}$

Subsituting:

$\dfrac{\dfrac{7!}{3!\cdot(7-3)!}\times \dfrac{13!}{8!\cdot(13-8)!}}{\dfrac{20!}{11!\cdot(20-11)!}}$

$=\dfrac{\dfrac{7!}{3!\cdot 4!}\times \dfrac{13!}{8!\cdot 5!}}{\dfrac{20!}{11!\cdot 9!}}=0.26818885$

2. The 12th package

The probability 12th package is damaged too is 7 - 3 = 4, out of 20 - 11 = 9:

3. Finally

The probability that exactly 12 packages are inspected to find exactly 4 damaged packages is the product of the two calculated probabilities:

$0.26818885\times 4/9=0.119$

6 0

4 years ago

What is the present for 0.8

Vilka [71]

If you are meaning Percent... (which I believe you are) .8 is the same as .80, and for percent, take away the decimal and put a percent sign next to it. your answer is 80%

7 0

4 years ago

N-2=10n+4 over 2 what is the value of n

Snowcat [4.5K]

Consider the given equation:

$n-2 = \frac{10n+4}{2}$

Cross multiplying in the given equation, we get

$(n-2) \times 2 = 10n+4$

Applying distributive property which states $a(b+c) = ab+ac$ , we get

$(n \times 2) - (2 \times 2) = 10n+4$

$2n -4 = 10n+4$

Adding '4' on both the sides, we get

$2n-4+4 = 10n+4+4$

$2n = 10n+8$

Subtracting '10n' from both the sides of the equation, we get

$2n-10n = 10n+8-10n$

$-8n = 8$

Dividing by '-8' in both the sides of the equation, we get

$n= -1$

Therefore, the value of 'n' is -1.

6 0

3 years ago

A soccer field is a rectangle 90 meters wide and 120 meters long. The coach asks the players to run from one corner to the corne

mihalych1998 [28]

150 meters or so i think

5 0

3 years ago

the larger of two number is 15 more than three times the smaller number. If the sum of the two numbers is 63, find tge numbers.

irakobra [83]

X is the smaller number. 3x + 15 is the larger number. So x + 3x + 15 = 63. 4x + 15 = 63.
4x = 48. x = 12. (Smaller number) The larger 36 + 15 or 51.

6 0

4 years ago

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