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Sergio [31]
3 years ago
12

What is the average rate of change of an object between falling 4 feet and falling 64 feet? *Please explain

Mathematics
1 answer:
Daniel [21]3 years ago
6 0
Average rate of change can be calculated by the following

Δy/Δx

Our Δx refers to displacement.
Δx = 4 - 64 = -60

Our Δy refers to our Δf(x)

To get our f(x) values, we must plug in 64 and 4 into the function f(x)
f(64) = 8√64 = 64
f(4) = 8√4 = 16
Δf(x) = 16 - 64 = -48

So our rate of change is -60/-48 = 0.8

I believe the answer should be positive 0.8, but that's my best estimate.
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Answer:

43. = \frac{.0045}{100}

44. 4\frac{9}{10}

45. 8

Step-by-step explanation:

43. 0.45% = .0045

      = \frac{.0045}{100}

44. \frac{1}{2} • 9\frac{4}{5}

    = 4\frac{9}{10}

45. VIII = 8

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Lizzie measured the length of a trail near her house. She discovered that her measurement had a margin of error of 0.0005 mile.
Scorpion4ik [409]

Complete question:

Lizzie measured the length of a trail near her house. She discovered that her measurement had a margin of error of 0.0005 mile. Which of the following could be the measured length of the trail?

A. 9.3 miles

B. 9.2549 miles

C. 9.254 miles

D.9.25 miles

Answer:

  • <u><em>B. 9.2549 miles</em></u>

Step-by-step explanation:

Measurements are subject to errors. Hence, when you make a measurement you must report it along with the error.

In this case, <em>Lizzie discovered that her measurement had a margin of error of 0.0005 mile.</em>

That means that the error of the measure is in the fourth decimal digit.

The measurement is supposed to be certain until the third decimal digit and the fourth digit would be uncertain.

The rule is that measures are reported with one uncertain digit.

Therefore, the <em>measured length</em> should contain 4 decimal digits, which means that , from the answer choices the measured length should be 9.2549 miles.

The measure should be reported as 9.2549 miles ± 0.0005 mile, meaning the the fourth decimal is uncertain. The uncertanity of the measure is 0.0005 mile.

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