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shutvik [7]
3 years ago
12

Type in expanded form. Use parentheses to indicate multiplication. 10^4

Mathematics
2 answers:
svet-max [94.6K]3 years ago
8 0
10^4 is the same as saying, 10·10·10·10 or 10,000
mojhsa [17]3 years ago
3 0
10^4 equals (10)(10)(10)(10) in expanded form
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Somebody help #9 geometry
IrinaK [193]

Answer:

41.1units^2

Step-by-step explanation:

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A=\frac{\pi r^2}{2}\\\frac{\pi 4^2}{2}\\=25.13units^2(semicircle)

Add both together

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Step-by-step explanation:

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2 years ago
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A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam
Marat540 [252]

Answer:

The score that cuts off the bottom 2.5% is 48.93.

Step-by-step explanation:

When the distribution is normal, we use 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 question, we have that:

\mu = 65, \sigma = 8.2

What is the score that cuts off the bottom 2.5%

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-1.96 = \frac{X - 65}{8.2}

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X = 48.93

The score that cuts off the bottom 2.5% is 48.93.

8 0
3 years ago
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