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pentagon [3]
3 years ago
12

Nina can ride her bike 63,360 feet in 3,400 seconds, and Sophia can ride her bike 10 miles in 1 hour. What is Nina’s rate in mil

es per hour if there are 5,280 feet in a mile?
Mathematics
2 answers:
White raven [17]3 years ago
8 0

Answer:

Nina's rate is 12.7059 miles per hour (answer rounded up to four decimal places).

Step-by-step explanation:

Nina can ride her bike 63,360 feet in 3400 sec

1 mile = 5,280 feet

How many miles = 63,360 feet ?

Its 63,360 feet ÷ 5,280 feet × 1 mile = 12 miles

Nina's rate is 12 miles per 3400 seconds

1 hour = 3600 seconds

So in 1 hour, Nina rides \frac{3600}{3400} × 12 miles = 12.7059 miles (rounded up to four decimal places)

Nina's rate is 12.7059 miles per hour (answer rounded up to four decimal places).

Mumz [18]3 years ago
6 0

Answer:12.7

Step-by-step explanation:

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Answer: 10 inches.

Step-by-step explanation:

Since the pecan pie is a circle, you can use this formula:

arc\ length=r\theta

Where "r" is the radius and \theta is the central angle of the arc in radians.

If the pecan pie has been cut into 8 equal pieces then the central angle is:

\theta=\frac{2\pi}{8}\\\\\theta={\frac{\pi}{4}

Now you know the arc length and the central angle, then, you can solve for "r" from  arc\ length=r\theta:

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Substituting values, you get that the radius of the pecan pie rounded to the nearest whole number is:

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3 years ago
The square of a number is equal to two less than three times the number. What are two possible values of the number?
ycow [4]

Answer:

A, 1,2

Step-by-step explanation:

we translate it first into language of math

we use n for the number

n² = 3n - 2

then, do some algebra things

n² - 3n + 2 = 0

then factorize it

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first n

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Answer:

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Step-by-step explanation:

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