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Reika [66]
3 years ago
12

A recipe calls for blueberry muffins cost for 2 3/4 cup of blueberries. You are making 1/3 of the recipe. How much blueberries s

hould you use?
Mathematics
1 answer:
tester [92]3 years ago
7 0

Answer: 8/9 cups

Step-by-step explanation:

The word 'of' means 'times' as far as fractions are concerned. In this case, we have 1/3 of 2 1/3.

First, it is a good idea to make 2 1/3 an improper fraction - as 8/3, so now we have:

1/3 of 8/3, but since 'of' means 'times' we have,

1/3 x 8/3 = 8/9

The answer is 8/9 cups.

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A market research analyst claims that 32% of the people who visit the mall actually make a purchase. You think that less than 32
Rainbow [258]

Answer:

E. -1.48

Step-by-step explanation:

The test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the expected value, \sigma is the standard deviation and n is the size of the sample.

A market research analyst claims that 32% of the people who visit the mall actually make a purchase.

This means that:

\mu = 0.32

\sigma = \sqrt{0.32*0.68} = 0.4665

You stand by the exit door of the mall starting at noon and ask 82 people as they are leaving whether they bought anything. You find that only 20 people made a purchase.

This means that n = 82, X = \frac{20}{82} = 0.2439

The value of the test statistic is about:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{0.2439 - 0.32}{\frac{0.4665}{\sqrt{82}}}

t = -1.48

So the correct answer is given by option E.

3 0
3 years ago
What is the percent change from 41 to 95?
igomit [66]

Answer:

131.7%

Step-by-step explanation:

I used <em>https://www.omnicalculator.com/math/percentage-change</em>

5 0
3 years ago
Please help (pre algebra)
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The answer is
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-9 may be the right answer

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