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BaLLatris [955]
2 years ago
14

There were 20 pumpkins in a garden. One fourth of the pumpkins were too small, one tenth were too large, and one half were just

the right size. The rest were not ripe yet. How many of the pumpkins were too small?
Mathematics
2 answers:
rosijanka [135]2 years ago
7 0

Answer:

5 pumpkins

Step-by-step explanation:

It is said that one fourth of the pumpkins is too small, so:

\frac{pumpkins-that-are-too-small}{total-amount-of-pumpkins}=\frac{1}{4}

This means one out of every four pumpkins is too small.

But we have a total of 20 pumpkins, not four, so we just need to multiply our real total amount of pumpkins with the ratio given and then we find the amount of pumpkins that are too small:

\frac{pumpkins-that-are-too-small}{total-amount-of-pumpkins}*total-amount-of-pumpkins

=pumpkins-that-are-too-small

So; filling in the numbers:

\frac{1}{4} *20 = \frac{1*20}{4}=\frac{20}{4}=5

Monica [59]2 years ago
5 0

Answer: 5 pumpkins

Step-by-step explanation:

      Since one-fourth of the pumpkins were too small, we will find one-fourth of 20 by dividing, then multiplying.

One fourth = \frac{1}{4} = 0.25

20 * 0.25 = 5

           5 pumpkins were too small.

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Answer:

0.1150 = 11.50% probability that the sample does not contain any fibers of polymer B

Step-by-step explanation:

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In this question:

Fibers are chosen without replacement, which means that we use the hypergeometric distribution.

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P(X = 0) = h(0,92,10,17) = \frac{C_{17,0}*C_{75,10}}{C_{92,10}} = 0.1150

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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SOVA2 [1]
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