In a class 30 of students, 7 play an instrument and 11 play a sport. There are 2students who play an ifistrument and also play a sport. What is the probability that a
student chosen randomly from the class plays a sport or an instrument?

Answers

Answer 1

Answer:

Answer:

20/30 or 2/3

Step-by-step explanation:

you and the 7, 11, and 2. Because they play a sport or an instrument then you put the sum over 30. If you simplify it will be 2/3

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What is 1/6 plus 1/2

Answers

$(1)/(2)=(3)/(6)\n\n(1)/(6)+(3)/(6)=(4)/(6)\n\n(4)/(6)=(2)/(3)$

So the final answer is 2/3

Answer:

2/3

Step-by-step explanation:

Which expression is equivalent to 2+y+y+y+y+y+3 ?

Answers

Answer:5y+5

Step-by-step explanation:

2+y+y+y+y+y+3

Collect like terms

y+y+y+y+y+3+2

5y+5

Jamie put 8 squares together to make a rectangle. There are 2 rows of squares. Each row has 4 squares. How many pairs of sides touch each other in the rectangle?

Answers

2! Because there is 8 in total and when u split it up equally you get 4 and when u put 4 and 4 together it has two rows together!

There would be 4 squares touching because if there are 2 rows of four squares to make the rectangle then the sides touching each other would equal 4.

Ballpoint pens cost $1.50 a dozen for the first 200 dozen a store buys from a wholesaler and $1.25 a dozen for those bought in addition to the first 200 dozen. If the store buys 250 dozen pens from the wholesaler, then what is the average cost of ballpoint pens per dozen.