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Iteru [2.4K]
3 years ago
6

Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits.

Mathematics
1 answer:
nydimaria [60]3 years ago
6 0

Answer:

93.4 g/mL x 20. mL = 1868g.

489.7m / 53.061 s = 9.23 m/s

216.3 m/66.4 s = 3.26 m/s.

Step-by-step explanation:

Let's analyze each case.

93.4 g/mL x 20. mL

Hewe we are multiplying g/ml*ml. So we have the answer is (g*ml/ml) = g.

So

93.4 g/mL x 20. mL = 1868g.

489.7m / 53.061 s

We are dividing a measurement in m by a measurement in s. So the answer is in m/s.

So

489.7m / 53.061 s = 9.23 m/s

216.3 m/66.4 s

Same as above.

We are dividing a measurement in m by a measurement in s. So the answer is in m/s.

So

216.3 m/66.4 s = 3.26 m/s.

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we believe that 42% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to
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Answer:

A sample of 1077 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

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A sample size of n is required, and n is found when M = 0.035. So

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0.035\sqrt{n} = 2.327\sqrt{0.42*0.58}

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