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kumpel [21]
3 years ago
7

At a certain high school, 35 students play only stringed instruments, 10 students play only brass instruments, and 5 students pl

ay both. There are also 5 students who play neither stringed nor brass instruments. what is the probability that a randomly selected student plays either a string or brass instrument?
Mathematics
1 answer:
Sophie [7]3 years ago
5 0

Answer:

9/11

Step-by-step explanation:

Well we know there are 55 students in total and only 45 of them can either play a string or brass instrument.

So 45/55 is 9/11

Thus probably is 9/11 of a randomly selected student who plays either a string or brass.

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Divide 4 2/3 & 3 1/3. Simplify the answer and write it as a mixed number.
Leto [7]

Answer:

4 2/3 ÷ 3 1/3= 1 2/5

Step-by-step explanation:

First, you turn the mixed terms into an improper fraction like this

4 2/3 → 14/3 because when you multiply 4 times 3 equaling 12 then having 2 then adding that you get 14/3.

3 1/3 → 10/3 because when you multiply 3*3=9 then having 1 and adding that you get 10/3.

Then, you do KCF which stands for <u>Keep Change Flip</u> so for this you would do: 14/3 ÷ 10/3 → 14/3 × 3/10

14 × 3 = 42 and 3 × 10= 30

Now being 42/30 this is considered an improper fraction in which you have to transform it into a mixed number like this:

(For this you need to find the greatest common factor)

42/30 →  42 and 30 greatest common factor is 6 because they are divisible and factor of 6.

Now you divide both the denominator and the numerator y 6 like this:

42 ÷ 6= 7

30 ÷ 6= 5

Now we have 7/5, this is still an improper number so we see how many times 7 can go to 5 which is once. So we have 1 as whole number, now we put the reminder as the numenator of the mix fraction keeping 5 as being the denominator.

Overall, We have our answer 1 2/5

I hope this helps :D  

7 0
3 years ago
Eli has a number cube. Each side has a different number: 1, 2, 3, 4, 5, or 6. Eli will roll the number cube once. What is the pr
Vanyuwa [196]
The odds of rolling a 4 is 1/6 or 0.16667 or 16%
8 0
4 years ago
2(5 - 3) 2 + 6 2 what is the answer
ivolga24 [154]
The answer is twenty four if I read that correctly
5 0
4 years ago
Anwser this will give my prod
ddd [48]

Answer:

the answer is 9/2 = 1/2 + 1/2 + 1/2 + 1/2 + 1/2 + 1/2 + 1/2 + 1/2 + 1/2

Step-by-step explanation:

When yo add all the halves up you get 9/2

8 0
3 years ago
Read 2 more answers
I need help. I don't understand this question.
Sergeu [11.5K]

Answer:

p=25

Step-by-step explanation:

-5[-9=-\frac{p}{5} -4]    Get rid of the fraction by multiplying the whole equation by -5.

45=p+20      Then, subtract 20 from both sides.

25=p

4 0
3 years ago
Read 2 more answers
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