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Setler [38]
3 years ago
12

What is the probability that a student who plays an instrument is in band

Mathematics
1 answer:
m_a_m_a [10]3 years ago
3 0

Answer:

20/25

Step-by-step explanation:

Here, we want to calculate the probability that a student who plays an instrument is in band

The number of students who play instruments are;

25

Amongst this,

20 are in a band

So the probability of having a student who plays instrument and is in a band will be;

20/25 = 4/5

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Isaiah And Cooper work at a dry cleaner Ironing shirts.isaiah can iron 25 shirts per hour, and Cooper can iron 30 shirts per hou
neonofarm [45]

Answer:

Step-by-step explanation:

340/25 = 13.6 = 13 hours and 10 min

30 x 13.6 = 408 hours

25x+30y= 340 and y=2x can be used to determine the number of hours cooper worked and the number of hours isaiah worked. Where x Isaiah 's working hours and y is cooper's working hours.

Step-by-step explanation:

Isaiah ironing rate per hour = 25 shirts

Cooper ironing rate per hour = 30 shirts

Total shirts pressed = 340

Let,

Isaiah´s number of hours = x

Cooper's number of hours = y

According to given statement;

25x+30y=340   Eqn 1

Hudson worked twice many hours as grace.

y = 2x    Eqn 2

Keywords: linear equations, variables

Learn more about variables at:

brainly.com/question/4837736

brainly.com/question/4805611

#LearnwithBrainly

8 0
4 years ago
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What is the exact volume of the cylinder? A.) 54pi in3
MatroZZZ [7]

Answer:

Choice D

Step-by-step explanation:

You use the formula V=pi(radius^2)(h). Once you take the pi out and plug in the numbers, you should get V= 6^2(9). You get 324 with the pi added on after it.

3 0
3 years ago
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Math can someone please help me I am struggling and about to give up plaese help.
vagabundo [1.1K]
Yes what do you need help with?
4 0
3 years ago
Which of the following situations are equal to 20%? Select all that apply.
lilavasa [31]

Answer:

all except C.

Step-by-step explanation:

8 0
3 years ago
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Please help asap please
vodka [1.7K]
Ok, so lets evaluate this here:
2/3 (x - 6) - y       Let's do the first part: 2/3 (x - 6)
                           If X = 9 then we subtract 6 from 9 and get 3. Then we multiply 
                           3 by 2/3 and get 2.
Then lets do the 2nd part: 2 - y.
So if y = 5/6, we can first convert 2 into an improper fraction in sixths and have 12/6. Then. we just have to do 12/6 - 5/6 and subtract the numerators and end up with 7/6. The final answer is A, hope this helps!
7 0
3 years ago
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