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SCORPION-xisa [38]
3 years ago
13

What is the rational number equivalent to 3.12 repeating? 3 4/33, 3 8/33 ,3 10/33 ,3 5/33?

Mathematics
1 answer:
Schach [20]3 years ago
5 0
3.12 = 3 4/33 (<span>3.12 repeating)</span>
hope it helps
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What are the coordinates of the point (-3,4) after a translation of 2 units down and 5 units left
marta [7]

Answer:

(-8, 2)

Step-by-step explanation:

Start with (-3, 4).  Subtract 5 units from -3, obtaining -8, and subtract 2 units from 4, obtaining 2:  (-8, 2)

5 0
3 years ago
Let the abbreviation PSLT stand for the percent of the gross family income that goes into paying state and local taxes. Suppose
gavmur [86]

Answer:

Number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

Step-by-step explanation:

We are given that one wants to estimate the mean PSLT for the population of all families in New York City with gross incomes in the range $35.000 to $40.000.

If sigma equals 2.0, we have to find that how many families should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5.

Here, we will use the concept of Margin of error as the statement "true mean PSLT within 0.5" represents the margin of error we want.

<u></u>

<u>SO, Margin of error formula is given by;</u>

       Margin of error =  Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }

where, \alpha = significance level = 10%

            \sigma = standard deviation = 2.0

            n = number of families

Now, in the z table the critical value of x at 5% ( \frac{0.10}{2} = 0.05 ) level of significance is 1.645.

SO,        Margin of error =  Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }

                          0.5   =  1.645 \times \frac{2}{\sqrt{n} }

                         \sqrt{n} =\frac{2\times 1.645 }{0.5}

                         \sqrt{n} =6.58

                           n  =  6.58^{2}

                               = 43.3 ≈ 43

Therefore, number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

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Kylie buys a ceramic case priced at $75. Shipping and handling are an additional 9 2/5% of the price. How much shopping and hand
salantis [7]
\bf \begin{array}{ccllll}&#10;amount&\%\\&#10;\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\&#10;75&100\\&#10;x&9\frac{2}{5}&#10;\end{array}\implies \cfrac{75}{x}=\cfrac{100}{9\frac{2}{5}}\implies \cfrac{75}{x}=\cfrac{100}{\frac{9\cdot 5+2}{5}}

\bf \cfrac{75}{x}=\cfrac{\frac{100}{1}}{\frac{47}{5}}\implies \cfrac{75}{x}=\cfrac{100}{1}\cdot \cfrac{5}{47}\implies \cfrac{75}{x}=\cfrac{500}{47}\implies 75\cdot 47=500\cdot x&#10;\\\\\\&#10;\cfrac{3525}{500}=x\implies \cfrac{141}{20}=x\implies 7.05=x
7 0
3 years ago
For this Prism to be a right prism, all the lateral faces must be rectangles. Is enough infromation given to prove the lateral f
Ilia_Sergeevich [38]

Answer:

yes i think that is definitely enough intonation

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What are speculative investments
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Answer:

The Definition of Speculative Investments. Speculative investments are long-term investments rooted in a thesis that’s not currently provable —but could become provable in the future.

Step-by-step explanation:

for example nderstanding Speculative Risk. A speculative investment is one where the fundamentals do not show immediate strength or a sustainable business model.

5 0
1 year ago
Read 2 more answers
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