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NNADVOKAT [17]
3 years ago
13

Explain how to write 3 x 3/8 as the product of a whole number and a unit fraction

Mathematics
2 answers:
Anestetic [448]3 years ago
8 0
If you
3 x 3 / 8
you
3× 3 = 9
in you put
9/8
Paladinen [302]3 years ago
6 0

Answer:   9\times \frac{1}{8}

Step-by-step explanation:

Whole number : A natural number ( included 0 ) is called a whole number,

A unit fraction:  A fraction having the numerator 1 is called a unit fraction.

Here the given expression,

3\times \frac{3}{8}

=\frac{3}{1}\times \frac{3}{8}

=\frac{3\times 3}{1\times 8}

=\frac{9}{8}

=9\times \frac{1}{8}

Which is the required expression that shows the product of a whole number (9) and a unit fraction (1/8).

⇒ 3\times \frac{3}{8}=9\times \frac{1}{8}

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Kendra swims 126 miles in 3 days, what is the constant rate that Kendra swims per day? a. 40 miles per day c. 42 miles per day b
Leni [432]

Answer:

c. 42 miles per day

Step-by-step explanation:

From the information given, you can use a rule of three to calculate the constant rate that Kendra swims per day given that she swims 126 miles in 3 days:

3 days → 126 miles

1 day   →        x

x=(1*126)/3=42 miles

According to this, the answer is that Kendra swims 42 miles per day.

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2 years ago
what if erika and Bradley want to hike 14 miles each day? how many days will they hike exactly 14 days?
katrin2010 [14]
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3 years ago
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Step-by-step explanation:

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3 years ago
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A normal distribution has a standard deviation equal to 39. What is the mean of this normal distribution if the probability of s
Naily [24]

Answer:

The mean is \mu = 131

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\sigma = 39

What is the mean of this normal distribution if the probability of scoring above x = 209 is 0.0228?

This means that when X = 209, Z has a pvalue of 1-0.0228 = 0.9772. So when X = 209, Z = 2.

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Answer:

c = 2

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2 years ago
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