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elena55 [62]
3 years ago
9

Edward wants to determine which skateboarder won a race. The actual time taken by four skateboarders to skate the same distance

is shown below:
Skateboarder A B C D
Time (in seconds) 4.28 4.24 4.26 4.25


If the stopwatch can measure to the nearest tenth of a second, which skateboarder will show as having a different time from the others?
Skateboarder A
Skateboarder B
Skateboarder C
Skateboarder D
Mathematics
2 answers:
iogann1982 [59]3 years ago
7 0
Skateboarder B. 4.24 will show as a different time since the stopwatch rounds to the nearest tenth and to round up it has to be 0.5+ and to round down you need 0.4 or below and in this case Skateboarder B. has a time of 4.24 thus it has a different time than the other times.

I Hope this helped you!
Vlad1618 [11]3 years ago
6 0

Answer:

skateboarder B

Step-by-step explanation:

Actual time taken by skateboards to skate are

4.28, 4.24, 4.26, 4.25 seconds.

If the stopwatch can measure to the nearest tenth of a second then the actual times will be recorded as

(A) 4.28 ≈ 4.3

(C) 4.26 ≈ 4.3

(D) 4.25 ≈ 4.3

(B) 4.24 ≈ 4.2

So skateboarder B will have different time from the others.

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Step-by-step explanation:

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3 years ago
A number, x, rounded to 1 decimal place is 3.7<br>Write down the error interval for x.​
alekssr [168]

Answer:

3.65 \leqslant x \leqslant 3.75

Step-by-step explanation:

The error in rounding a number is half of the unit of measure.

The number was rounded to the nearest 0.1 unit so the error is 1/2×0.1, which equals 0.05.

Now we add 3.7 and 0.05, which equals 3.75 and we also take 3.7 - 0.05, which equals 3.65

So, the error interval is:

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Step-by-step explanation:

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1 year ago
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vlabodo [156]

Answer:

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Step-by-step explanation:

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Given that the increase is 20%.

i.e.

Thus,

The amount of 20% Percentage increase = 20/100 × 599

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