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worty [1.4K]
3 years ago
5

The diameter of each wheel of a bicycle is 28 inches. If you are traveling at a speed of 15 miles per hour on this? bicycle, thr

ough how many revolutions per minute are the wheels? turning?
Mathematics
1 answer:
Rudik [331]3 years ago
7 0

Answer:

180.07 rev / min

Step-by-step explanation:

Diameter (D) of each wheel =28 inches

Circumference (C) =  π x 28 = 28π inches

Conversions:

1 mile = 63,360 inches

1 hour = 60 min

Hence 15 miles / hour

= (15)(63,360) inches / hour

= (15)(63,360) / 60  inches / min

= 15,840 inches per min

Number of revolutions per min = Number of inches per min ÷ circumference in inches

=15,840 inches/min ÷ 28π inches

= 180.07 revolutions per min

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f(x)=2x. If g(x) is a vertical stretch, compression, and or reflection of f(x) followed by a, what is the equation of g(x)?
Montano1993 [528]

The function g(x) is g(x)= (3x)^2

<h3>How to solve for g(x)?</h3>

The complete question is in the image

From the graph in the image, we have:

f(x) = x^2

The function f(x) is stretched by a factor of 3 to form g(x).

This means that:

g(x) = f(3x)

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Hence, the function g(x) is g(x)= (3x)^2

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7 0
2 years ago
Explain the different ways it is possible to add two rational numbers and get a negative number.
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<u>Answer:</u>

both numbers are negative

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3 0
3 years ago
Which statements are true about the polynomial 4x3 – 6x2 + 8x – 12?
olga2289 [7]

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7 0
3 years ago
Melania has two jobs. During the day she works as an office clerk, and in the evening she works as a cashier. her office job pay
bulgar [2K]
Lets x = # of hours Melania  works at <span>office clerk
and y = </span># of hours Melania  works as a <span>cashier

x + y = 38 so x = 38 - y
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substitute </span> x = 38 - y into 13x + 9.25y = 434

13x + 9.25y = 434
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494 - 13y + 9.25y = 434
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x = 38 - y so x = 38 - 16 = 22

answer
Melania  works at office clerk = 22 hours
Melania  works as a cashier = 16 hours
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3 years ago
8a^3 b^8+4ab^5-16ab^8= <br> need help plz! (factor completely)
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We can factor out the 4 to get
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we can also factor out the ab
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6 0
3 years ago
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