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zhuklara [117]
3 years ago
8

3. A stream is flowing at a rate of 25 litres/sec. How much water flows every minute? a.

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

Answer: 1,500 liters or 396.2581 gallons

Step-by-step explanation: To figure out how much water flows every minute, you‘ll have to multiply 25 liters to 60, which is how many seconds are in a minute. Once, you multiply 25 to 60, you should get a final result of 1,500 or 1,500 liters.

*Reminder*: <u>You can convert 1,500 liters to gallons if you want, but only if your teacher allows you to.</u>

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Jerome will also order t-shirt for the volunteer he will order both adults and child t-shirt . Adults t-shirt are $5 child t-shi
Gala2k [10]

Answer:

A\geq 200...(1)

5A+2.50C\leq 1500...(2)

Step-by-step explanation:

Let A represent number of adult t-shirts and C represent number of child t-shirts.

We have been given that adults t-shirt are $5 child t-shirt are $2.50, so cost of A adult t-shirts would be 5A and cost of C child t-shirts would be 2.50C.

We have been given that Jerome need at least 200 adults t-shirt. This means the number of adult t-shirts should be greater than on equal to 200.

We can represent this information in an inequality as:

A\geq 200...(1)

We are also told that Jerome will spend no more than $1500 on t-shirt. This means that cost of A adult t-shirts and C child t-shirts should be less than or equal to 1500.

We can represent this information in an inequality as:

5A+2.50C\leq 1500...(2)

Therefore, our required system of inequalities would be:

A\geq 200...(1)

5A+2.50C\leq 1500...(2)

3 0
3 years ago
A random sample of 40 college students has a mean earnings of​ $3120 over the summer months. Assume the population standard devi
PSYCHO15rus [73]

Answer:

A normal distribution or z-test is used to construct a confidence interval.

Step-by-step explanation:

We are given the following in the question:

Sample mean, \bar{x} = $3120

Sample size, n = 40

Population standard deviation, σ = $677

The distribution of earnings of college is a normal distribution.

Conditions:

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Conclusion:

Thus, we use a normal distribution or z-test to construct a confidence interval.

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The whole sale cost of bicycle is $75. There is a mark up of 55%. What is the new sale price of the bike
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Answer:

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7.50 x 5 = 37.50

37.50 + 3.75 = $41.25

$75 + $41.25 = $116.25

Hope this helps !

8 0
3 years ago
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