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cricket20 [7]
3 years ago
14

Three people build a wall in 10 days. How long would it take five people?

Mathematics
1 answer:
nata0808 [166]3 years ago
3 0

Answer:

6 days for 5 people

Step-by-step explanation:

  1. 3 x 10 = 30
  2. 30/5 - 6
  3. 6 days
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3 years ago
23. The mean weight of trucks traveling on a particular section of 1-475 is not known. A state highway inspector needs an estima
Free_Kalibri [48]

Answer:

0.3594 = 35.94% probability that a truck will weigh less than 14.3 tons

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution.

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 is 15.8 tons, with a standard deviation of the sample of 4.2 tons.

This means that \mu = 15.8, \sigma = 4.2

What is probability that a truck will weigh less than 14.3 tons?

This is the pvalue of Z when X = 14.3. So

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

Z = \frac{14.3 - 15.8}{4.2}

Z = -0.36

Z = -0.36 has a pvalue of 0.3594

0.3594 = 35.94% probability that a truck will weigh less than 14.3 tons

6 0
3 years ago
A recipe requires 3/4 cups of water targa has a measuring cup that is marked only in ounce but she knows that 8 ounces is equiva
bulgar [2K]

Answer:

6 ounces of water

Step-by-step explanation:

In this question, we are asked to calculate the amount in ounce that would be added to the recipe.

From the question, we can see that the recipe requires 3/4 cups of water.

From the question also, we can also see that one cup equals 8 ounces.

Now to know the amount of water that is to be added, what we need to do is to simply multiply the fraction of water in the recipe by 8 ounces

This is equal to 3/4 * 8 = 6 ounces

Hence, she needs to add a total of 6 ounces of water to the recipe

5 0
3 years ago
Read 2 more answers
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