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ludmilkaskok [199]
3 years ago
11

Find the average rate of change of f(x) sq rt x+6 = on [4, 9]. Round your answer to the nearest hundredth.

Mathematics
1 answer:
ZanzabumX [31]3 years ago
5 0

Answer:

Step-by-step explanation:

The average rate of change is an algebra thing, whereas the instantaneous rate of change is a calculus thing.  Since this is not a straight line we are simply finding the slope of the straight line that connects the 2 coordinates (4, y) and (9, y).  To find the y's in each case, sub in the x value and solve for y:

If y=\sqrt{x+6}  when x = 4, then y=\sqrt{10}  and the coordinate is (4,\sqrt{10}).

Likewise for the other coordinate when x = 9.  y = \sqrt{15} and the coordinate is (9,\sqrt{15})

Using the slope formula,

m=\frac{\sqrt{15}-\sqrt{10}  }{9-4} and

m=\frac{\sqrt{15}-\sqrt{10}  }{5} and

m = .14 rounded

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