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2 years ago

Drew has 4 pieces rope 1 meter long each. He cuts each rope into fifths. How long will each of the fifths be in centimeters?

Mathematics

1 answer:

erastovalidia [21]2 years ago

5 0

Answer:

20 CM

Step-by-step explanation:

100 cm = 1 meter

the one meter roope = 100cm

Dvide 100cm by 1/5 to determine the length of each cm

100 cm x 5 = 20

100 cm x 5

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The sum of two numbers is 40 and the difference is 4. What are the numbers?

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Answer:

18, 22

Step-by-step explanation:

Half of 40 is 20 right? Then one number has to be 2 less, while the other number is 2 more. So there is a difference of 4.

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago

Read 2 more answers

The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3903

polet [3.4K]

Answer:

0.9861 = 98.61% probability that the weight will be less than 4884 grams.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean weight of 3903 grams and a standard deviation of 446 grams.

This means that $\mu = 3903, \sigma = 446$

If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be less than 4884 grams.

P-value of z when X = 4884. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{4884 - 3903}{446}$

$Z = 2.2$

$Z = 2.2$ has a p-value of 0.9861

0.9861 = 98.61% probability that the weight will be less than 4884 grams.

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2 years ago