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joja [24]
3 years ago
9

Jack took a test and got 13 out of 17 points. He took a make-up test and got 12 out of 15 points.

Mathematics
2 answers:
Taya2010 [7]3 years ago
8 0
The answer is 4.6%






hope this helps
sertanlavr [38]3 years ago
5 0

hey my man it's 4.6%

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A club consists of 21 Republicans and 25 Democrats. If four people are chosen at random to be on a​ committee, what is the proba
Allushta [10]

Answer:

88.58% probability that at least one person from each political party will be​ chosen

Step-by-step explanation:

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

Also, the order which the people are chosen is not important. So the combinations formula is used to solve this problem.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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

If four people are chosen at random to be on a​ committee, what is the probability that at least one person from each political party will be​ chosen?

Either only Republicans or Democrats are chosen, or at least one member from each party is chosen. The sum of these probabilities is 100%.

The easier way to solve this is first finding the probability that members are only from one party.

Probability of having members from only one party:

Desired outcomes:

Only Democrats:

4 from a set of 25.

Only Republican:

4 from a set of 21.

So

D = C_{25,4} + C_{21,4} = \frac{25!}{4!21!} + \frac{21!}{4!17!} = 18635

Total outcomes:

4 from 21+25 = 46 total members

T = C_{46,4} = \frac{46!}{4!42!} = 163185

Probability:

p = \frac{D}{T} = \frac{18635}{163185} = 0.1142

11.42% probability of having people from only one party in the committee

Probability of at least one person from each party:

p + 11.42 = 100

p = 88.58

88.58% probability that at least one person from each political party will be​ chosen

5 0
3 years ago
A road crew is putting sign on a 5 mile Road the first sign is the start of the road then they will place a sign every 500 yards
Grace [21]

Answer:

17

Step-by-step explanation:

There are 5,280 feet in a mile you want to multiply that by 5 for 5 miles

(5,280) (5) = 26,400

Since there are 3 feet in a yard you want to divide this number by 3

26,400/3 = 8,800

Then divide this by 500 for every 500 yards

8,800/500 = 17.6

Then round down because you can't have a decimal.

Therefore it is 17

3 0
3 years ago
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schepotkina [342]

Answer:

option C is correct..

Step-by-step explanation:

mark me as brainliest ❤️

6 0
2 years ago
F(x)=2x+3 g(x)=x-4 Find (f+g)(2)<br> Please help asappp
bulgar [2K]

Answer:

(f+g)(2)=5

Step-by-step explanation:

Subsitute 2 in for x in both functions. Then add the answers of the functions together.

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How do you find the volume of a cube
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To find the volume of a cube you multiply the length of any side by its self twice  <span />
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