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Ksenya-84 [330]
3 years ago
11

Jessica earn some money for completing chores.She spent 1/6 of it on snacks and 1/3 of it on a book.She saved the rest.What frac

tion of the money did she save?
Mathematics
1 answer:
kkurt [141]3 years ago
6 0

Answer:1/2

Step-by-step explanation:

Find a common denominator, 3 goes into 6, 2 times so it is now 1/6, 2/6. Add the numerators and you will get 3/6. 6-3 = 3, 3/6 simplified = 1/2 Jessica saved half of her money

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Your cell phone company charges $20 a month plus $0.50
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Answer:

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Step-by-step explanation:

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2 years ago
Given the proportion a/b=12/19 which ratio completes the equivalent proportion a/12=?
Hitman42 [59]
\bf \cfrac{12}{19}=\cfrac{a}{12}  solve for "x"
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A safety auditor at a paint factory took a random sample of 25 cans of paint from a production run of over
stepan [7]

Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval is (29.6, 44.4).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm t\frac{s}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • t is the critical value.
  • n is the sample size.
  • s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a <u>two-tailed 95% confidence interval</u>, with 25 - 1 = <em>24 df</em>, is t = 2.0639.

The other parameters are given by:

\overline{x} = 37, s = 18, n = 25.

Hence, the bounds of the interval are given as follows:

\overline{x} - t\frac{s}{\sqrt{n}} = 37 - 2.0639\frac{18}{5} = 29.6

\overline{x} + t\frac{s}{\sqrt{n}} = 37 + 2.0639\frac{18}{5} = 44.4

The 95% confidence interval is (29.6, 44.4).

More can be learned about the t-distribution at brainly.com/question/16162795

7 0
1 year ago
Read 2 more answers
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krek1111 [17]
940, 374/4 is 94, 94 times 10 is 940.
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