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Marianna [84]
3 years ago
11

Which expressions are equivalent to 10/10^3/4

Mathematics
2 answers:
zysi [14]3 years ago
3 0

\dfrac{10}{10^\frac{3}{4}}=10^{1-\frac{3}{4}}=10^\frac{1}{4}=\sqrt[4]{10}\\\\\text{Used:}\\\\\dfrac{a^n}{a^m}=a^{n-m}\\\\\sqrt[n]{a}=a^\frac{1}{n}

Nitella [24]3 years ago
3 0

it is the second and last ones

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The length of human pregnancies from conception to birth varies according to a distribution that is approximately normal with me
iragen [17]

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Step-by-step explanation:

The Empirical Rule(68-95-99.7 rule) states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

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99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

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By the Empirical rule, 95% of all pregnancies fall within 2 standard deviations of the mean.

So

267 - 2*19 = 229 days

to

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(b) How short are the shortest 2.5% of all pregnancies?______days or less

95% of all pregnancies fall within 2 standard deviations of the mean. The other 5% are more than 2 standard deviations from the mean. Since the distribution is symmetric, 2.5% is more than 2 standard deviations below the mean(shortest 2.5%) and 2.5% is more than 2 standard deviations above the mean(longest 2.5%). So

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7 0
3 years ago
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3 years ago
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Step-by-step explanation:

x =7y ----(1)

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the two numbers are 15.87 and 2.27 (Ans)

6 0
2 years ago
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