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3 years ago

To the nearest revolution, how many times will a bicycle wheel

Mathematics

1 answer:

iren [92.7K]3 years ago

3 0

Answer:

776 times

Step-by-step explanation:

Find out how far a mile is in inches -> 1 mile = 63360 inches.
Find out the circumference of the wheel (how far it will travel per revolution) C = πd = 26π = 81.68 inches.
Divide the total distance by how far we go each revolution: 63360/ 81.68 = 775.71 revolutions.
Therefore to the nearest revolution, the wheel turns 776 times.

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The difference between the two is 14,867 feet

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3 years ago

Anyone know how to do this with a explanation ?

storchak [24]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

In a survey of 300 T.V. viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want

bixtya [17]

Answer:

Step-by-step explanation:

The formula for calculating the margin of error is expressed as;

$M.E = z * \sqrt{\frac{p*(1-p)}{n} }$ where;

z is the z-score at 95% confidence = 1.96 (This is gotten from z-table)

p is the percentage probability of those that watched network news

p = 40% = 0.4

n is the sample size = 300

Substituting this values into the formula will give;

$M.E = 1.96*\sqrt{\frac{0.4(1-0.4)}{300} }\\ \\M.E = 1.96*\sqrt{\frac{0.4(0.6)}{300} }\\\\\\M.E = 1.96*\sqrt{\frac{0.24}{300} }\\\\\\M.E = 1.96*\sqrt{0.0008}\\\\\\M.E = 1.96*0.02828\\\\M.E \approx 0.05543$

Hence, the margin of error for this survey if we want 95% confidence in our estimate of the percent of T.V. viewers who watch network news programs is approximately 0.05543

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3 years ago

(y+8)-3=16 solve by using the associative property

zysi [14]

Answer:

y = 11

Step-by-step explanation:

(y+8)-3=16

y + 8 - 3 = 16

y + 5 = 16

y = 11

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3 years ago