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CaHeK987 [17]
3 years ago
9

In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student

is chosen randomly from this group. What is the probability that the student takes both Art or Music courses?
13/21


8/21


2/7


5/7
Mathematics
2 answers:
Grace [21]3 years ago
7 0

Answer:

13/21

Step-by-step explanation:

8/21 + 7/21 -2/21 = 13/21

You would do the minus two since two students take both.

allochka39001 [22]3 years ago
5 0
I think it is 5/6 because you would have to choose a small amount
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Step-by-step explanation:

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3 years ago
A washer and a dryer cost $995 combined. The washer cost $45 more than the dryer. What is the cost of the dryer?​
Talja [164]

When a washer and a dryer cost $995 combined. If  the washer cost $45 more than the dryer, then the cost of the dryer is $475

The combined cost of a washer and a dryer = $995

Consider the cost of a dryer as x

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The cost of the washer = x+45

Then the equation will be

x+x+45 = 995

2x+45 = 995

2x = 950

x = 950/2

x = 475

The cost of the dryer is $475

Hence, when a washer and a dryer cost $995 combined. If  the washer cost $45 more than the dryer, then the cost of the dryer is $475

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1 year ago
During the summer months, science center tickets are 3 for $36.75 and zoo tickets are 4 for $51. How much will a group of 12 stu
Tatiana [17]

Answer:

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Step-by-step explanation:

Step 1:

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3 years ago
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If y varies inversely as the square of x and y=4 when x=5, find y when x is 2
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need to kind K

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Step-by-step explanation:

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