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ASHA 777 [7]
3 years ago
14

Help! will give brainliest.

Mathematics
1 answer:
Ganezh [65]3 years ago
7 0

Answer: the answer is c. 314

Step-by-step explanation:

the area of a circle is pi r^2

the diameter is 2 times the radius which is r

20/2 is 10

10^2 = 100

pi is around 3.14

100*3.14 = 314

hope that helps!

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Suppose that a movie theater snack bar turns over its inventory of candy 3.3 times per month. (Round your answer to 2 decimal pl
hammer [34]

Answer:

The average daily sales rate for candy is 37.4.

Step-by-step explanation:

We know that,

\text{Inventory turnover }= \frac{\text{Total sale}}{\text{Average inventories}}

\implies \text{Total sale}=\text{Inventory turnover }\times \text{Average inventories}

Given,

Inventory turnover of candies = 3.3,

Average inventories = 340

So, sale of candies = 3.3 × 340 = 1122

Now,

\text{Average daily sales rate}=\frac{\text{total sale}}{\text{Number of days}}

Since, 1 month = 30 days ( approx ),

Hence, the  average daily sales rate for candy = \frac{1122}{30}=37.4

6 0
3 years ago
Research indicates that many Americans do not save enough for retirement, on average. A group of economists at the Federal Reser
Scrat [10]

This question is incomplete, the complete question is;

Research indicates that many Americans do not save enough for retirement, on average. A group of economists at the Federal Reserve Bank of St. Louis are interested in conducting a study to examine whether Americans between the ages of 55 and 65 have saved too little. The analysts obtain a random sample of Americans in this age group and proceed to test if there is evidence of insufficient savings from these data. The variable considered is the total amount of savings for each individual, reported in thousands of US dollars (i.e. if value 3 appears in the data set, it stands for $3,000.)

Required:

Assume that financial specialists suggest that the minimum level of retirement savings should be 1.5 million US dollars. Use the JMP output to report the value of the test statistic used to gather evidence against the null hypothesis. Report your answer as a number ( no symbols ) and round up to two decimal places.

Test mean

Hypothesized value : 1500

Actual Estimate        : 1613.07

DF                             : 251

Std Dev                    : 782.626

t Test

prob > |t|  0.0226*

Answer:

the value of the test statistic used to gather evidence against the null hypothesis is 2.29

Step-by-step explanation:

Given the data in the question,

we determine Test statistics of using the formula

t = (x" - μ) / (s/√n)

where;

μ is the theoretical mean ( 1500 )

x" is the observed mean ( 1613.07)

s is the standard deviation ( 782.626 )

n is the sample size ( DF = n - 1, n = DF + 1 , n = 251 + 1 = 252 )

so we substitute

t = (1613.07 - 1500 ) / (782.626 / √252)

t = 113.07 / 49.3008

t = 2.29

Therefore, the value of the test statistic used to gather evidence against the null hypothesis is 2.29

8 0
2 years ago
How to solve for x? please help me please fast
Stella [2.4K]

Answer:

21.4, Because x is starts at 11 ending far away down, which means x has to be longer than 11

Step-by-step explanation:

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7 0
3 years ago
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Elijah wants to conduct a survey as to whether music CDs should be added to the items sold in the school store. Which sampling m
tresset_1 [31]
Elijah should interview every 5th student who enters the building in the morning. It would be a stratified sampling where Elijah will take a sample from each one out of five students.

The other methods would be a biased sampling as students who are in a school band or attending a concert or wearing earbuds in the cafeteria would likely to give a 'yes' answer.

8 0
3 years ago
Write the prime factorization of 4. Use exponents when appropriate and order the factors from least to greatest (for example, 22
ra1l [238]
Well the only prime factor that can go into 4 would be 2 (multiplied by) 2, but you could just say 2. Hope this helped! 
7 0
3 years ago
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