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3 years ago

6

William cycles at a speed of 15 miles per hour. he cycles for 12 miles from home to school. if he increases his cycling speed by

5 miles per hour, how much faster will he reach his school.

1 answer:

Alja [10]3 years ago

3 0

12/15=4/5 original speed
12/20=3/5 increase by 5mph
He will reach 12 minutes earlier than he goes 15 miles per hour.
Correct me if I am wrong.

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Answer:

37.5 acres.

Step-by-step explanation:

Fraction of his land where vegetables are grown

= 1 - 1/3 - 2/3 *3/5

(after taking away 1/3 we get 2/3 and the farmer uses 3/5 of this 2/3 to grow Maize.

= 1 - 1/3 - 6/15 LCD of 3 and 15= 15 so we write:

= 1 - 5/15 - 6/15

= 1 - (5+6)/16

= 1 - 11/15

= 4/15.

4 /15 is equivalent to 10 acres

so total area (= 1) = 10 / 4/15 Invert the 4/15 and multiply:

= 10 * 15/4

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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4 years ago

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4 years ago

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suter [353]

Answer:

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Step-by-step explanation:

We know the population proportion π=0.8, according to the 2011 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation.

If we take a sample from this population, and assuming the proportion is correct, it is expected that the sample's proportion to be equal to the population's proportion.

The standard deviation of the sample is equal to:

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With the mean and the standard deviaion of the sample, we can calculate the z-value for 0.79 and 0.81:

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3 years ago