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____ [38]
3 years ago
15

PLZZZZZZZZZ help its on the screenshot

Mathematics
2 answers:
Komok [63]3 years ago
6 0

Answer:

the answer is 40%

Step-by-step explanation:

liraira [26]3 years ago
6 0
Yea I also got 40% but my teacher says it’s wrong :(
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Hey could someome help me wit question 16
bearhunter [10]
What page is it because I have the same math book?Unless you're not in 8th grade then I can't help.
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3 years ago
A commuter train travels 65 kilometers in 27 minutes. What is it’s speed in kilometers per hour?
Inessa05 [86]

Answer:

Per hour: 2.40740740741

Step-by-step explanation:

you have to divided 65 and 27 so

65/27

which is 2.40740740741

7 0
3 years ago
Which of the following is one of the Mound Builders' cities that disappeared?
BabaBlast [244]

Answer:

Your answer is Cahokia. Hope this helps plz mark brainliest! Have a great day!

Step-by-step explanation:

5 0
2 years ago
The offices of​ president, vice​ president, secretary, and treasurer for an environmental club will be filled from a pool of 15c
Alexus [3.1K]

Answer:

a) 5.13% probability that all of the offices are filled by members of the debate​ team

b) 2.56% probability that none of the offices are filled by members of the debate​ team

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the people are chosen is important, since the first person is the president, the second is the vice president and so on... So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

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

​(a) What is the probability that all of the offices are filled by members of the debate​ team?​

Desired outcomes:

4(president, vice​ president, secretary, and treasurer) offices from a set of 8(candidates of the members debate team).

So

D = P_{(8,4)} = \frac{8!}{(8-4)!} = 1680

Total outcomes:

4 offices from a set of 15 candidates.

T = P_{(15,4)} = \frac{15!}{(15-4)!} = 32760

Probability:

P = \frac{D}{T} = \frac{1680}{32760} = 0.0513

5.13% probability that all of the offices are filled by members of the debate​ team

(b) What is the probability that none of the offices are filled by members of the debate​ team?

Desired outcomes:

4(president, vice​ president, secretary, and treasurer) offices from a set of 7(candidates who are not of the members debate team).

D = P_{(7,4)} = \frac{7!}{(7-4)!} = 840

Total outcomes:

4 offices from a set of 15 candidates.

T = P_{(15,4)} = \frac{15!}{(15-4)!} = 32760

Probability:

P = \frac{D}{T} = \frac{840}{32760} = 0.0256

2.56% probability that none of the offices are filled by members of the debate​ team

7 0
3 years ago
You can sell 80 pet chias per week if they are marked at $1 each, but only 50 each week if they are marked at $2/chia. Your chia
Damm [24]
Definitely pick the 2dollar option
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Read 2 more answers
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