Answer:
15
Step-by-step explanation:
5+20+15+18+20+19+12+16+10+15=150/10=15
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Calculate Jean's rate
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Jean takes 8 hours to fill the pool.
So in 1 hour, she can fill 1/8 of the pool
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Calculate Mark's rate
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Mark takes 12 hours to fill the pool.
So in 1 hour, he can fill 1/12 of the pool.
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Calculate their rate if they work together
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Jean = 1/8
Mark = 1/12
1/8 + 1/12 = 3/24 + 2/24 = 5/24
They will fill 5/24 of the pool in 1 hour
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Find number of hours needed to fill up the pool
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I hour = 5/24 of the pool
1 ÷ 5/24 hour = 5/24 ÷ 5/24 of the pool
24/5 hour = Whole pool
Whole pool = 24/5 hours
Whole pool = 4 4/5 hours or 4.8 hours
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Ans: The supervisor is not correct, it will take only 4.8 hours if both of them work together.
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Answer:
1000
Step-by-step explanation:
Okay so let's put T as TOTAL tickets
1800+1500+3T
To make it easier lets do this
3300+3T
total earnings is 5T+1300
So now the problem is this
3300+3T=5T+1300
Lets take away 1300 from both sides
3300-1300 = 2000
1300-1300 = 0
2000+3T=5T
Lets now take 3T from both sides
3T = 3T = 0
5T - 3T = 2T
now we have
2000=2T
Divide both sides by 2
1000=T
The team must sell 1000 tickets to break even
The expression that is equivalent to 100n^2-1 is A. (10n)^2-(1)^2 because anything equates to 1 is 1
Answer:
.34
Step-by-step explanation: