Each piston in a car's engine moves up and down in a cylinder and causes a crankshaft to rotate. Suppose
a piston starts at the midpoint of a stroke and has a maximum
displacement from the midpoint of 50 mm. Also suppose the
crankshaft is rotating at a rate of 3000 revolutions
(rpm). Use a sine function to graph the piston's displacement
relative to the midpoint of its stroke.
(Note that 60 rpm = 1 revolution per second.)
per
minute

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3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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