If a car has tires with a diameter of 28 inches and is traveling at 55 mph, how fast are its tires spinning, in rpm^ prime s (re
1 answer:
Answer:
The tires are spinning at 660.49 revolutions per minute.
Step-by-step explanation:
The speed of the tires (v) is the same that the speed of the car, so to find the angular velocity of the tires we need to use the equation:
Where:
r: is the radius of the tires = d/2 = 28 inches/2 = 14 inches
Therefore, the tires are spinning at 660.49 revolutions per minute.
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<h2>Answer</h2>
1. Use Distance formula
Important to use distance formula in such problems, so keep this formula memorized for future use.
The formula to find distance amongst two points is
2. Plug in the numbers into the formula:
1 -(-1)^2 + 3 - (-3)^2
36 + 4 = 40
3. Find the square root of 40.
Simplify further:
Answer:
y = x³ +2x² +x -1
Step-by-step explanation:
The attachment shows the four points we can read from the graph and the cubic regression function that fits them.
y = x³ +2x² +x -1
_____
<em>Additional comment</em>
It is useful to become familiar with the regression function capability of your graphing calculator or spreadsheet. Free or inexpensive apps are available for tablet or phone, and on the web.
