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Dmitrij [34]
3 years ago
8

The timekeeper for a particular mile race uses a stopwatch to determine the finishing times of the racers. He then calculates th

at the mean time for the first three finishers was 5.75 minutes. After checking his stopwatch, he notices to his horror that the stopwatch begins timing at 45 seconds rather than at 0, resulting in scores each of which is 45 seconds too long. What is the correct mean time for the first three finishers?
Mathematics
1 answer:
insens350 [35]3 years ago
7 0

Answer:

300 seconds = 5 minutes

Step-by-step explanation:

At first convert the time in minutes which is

5.75 * 60 = 345 seconds

No as the average is 345 seconds at starts from 45 so we subtract that time from 45 seconds

345-45 = 300 seconds (Mean)

So 300 seconds = 300/60 = 5 minutes

So the Accurate mean is 5 minutes

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artcher [175]
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3 0
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The volume of a pyramid varies jointly as the height and the area of the base. If a pyramid has the measurements V=1144
Naddika [18.5K]

Answer:

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Step-by-step explanation:

The given relation is ...

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We are given length and width of the base so we presume it is a rectangle.

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The given volume tells us the value of k:

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The general relationship is ...

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3 years ago
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2 years ago
What is the measure of angle A in the triangle below?
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Step-by-step explanation:

here's the solution: -

=》

\frac{x {}^{6} }{ {x}^{4} }  \times  {x}^{2}

=》

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=》

x \times x \times x \times x

=》

{x}^{4}

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