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Cerrena [4.2K]
3 years ago
14

Express 24.357 in expanded form using fractions or decimals express in unit form

Mathematics
2 answers:
AnnZ [28]3 years ago
8 0

Answer:

--------------------------------------------------

24.357 in expanded form.

In fraction form

(2\times10)+(4\times1)+(3\times\frac{1}{10} )+(5\times\frac{1}{100} )+(7\times\frac{1}{1000} )

= 20+4+0.3+0.05+0.007

= 24.357

In decimal form:

(2\times10)+(4\times1)+(3\times0.1)+(5\times0.01)+(7\times0.001)

= 20+4+0.3+0.05+0.007

= 24.357

algol133 years ago
5 0
Hi there! Expanded form is adding the numbers based off of place value. In this case, the expanded form of 24.357 is 20 + 4 + 0.3 + 0.05 + 0.007. Those numbers added up make 24.357.
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Answer:

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Estimate 9272 - 28 by first rounding each number so that it has only 1 nonzero digit.
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Answer:

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Step-by-step explanation:

In order to round 9272 so that it has only 1 nonzero digit, look at the hundred digit, If the number is greater or equal to 5, add 1 to the thousand figure. If this is not the case, add zero

The hundred digit is 2 which is less than 5, so 0 is added to 9. the number becomes 9000

In order to round 28 so that it has only 1 nonzero digit, look at the units digit, If the number is greater or equal to 5, add 1 to the tens figure. If this is not the case, add zero

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4 years ago
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.

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X - 65 = -1.96*8.2

X = 48.93

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