If the answer is supposed to be an equation, it should be -5(+)v
The solution to the given fraction 7/11 = x/9 to the nearest tenth is 5.7
<h3>Fraction</h3>
7/11 = x/9
7 × 9 = 11 × x
63 = 11x
x = 63/11
x = 5.72727272727272
Approximately,
x = 5.7
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This looks like an exercise that's building toward the idea of a derivative.
These calculations are done best with a calculator, but here's how the first interval is used:
Average velocity = (position at 2 - position at 1) / (2 - 1) It's really distance divided by time!
Position at t = 2:
Position at t = 1:
So over the interval [1, 2] the average velocity is
I used a spreadsheet to calculate the average velocity over the other intervals and a couple of shorter ones, too. (See attached image.)
As these intervals get shorter (the right endpoint is approaching 1), the average velocity gets closer and closer to the instantaneous velocity. An estimate would be -12.6.
Circumference = pi*diameter
28*3.14=87.92 mm
Final answer: A