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hjlf
3 years ago
14

Micheal has a sink that is shaped like a half-sphere. The sink has a volume of 3000/3π in^3. One day, his sink is clogged. He ha

s to use one of two cylindrical cups to scoop the water out of the sink. The sink is completely full when Micheal begins scooping.
A) One cup has a diameter of 6 in and a height of 8 in. How many cups of water must micheal scoop out of the sink with this cup to empty it? Round the number of scoops to the nearest whole number.

B) One cup has a diameter of 10 in and a height of 8 in. How many cups of water must micheal scoop out of the sink with this cup to empty it? Round the number of scoops to the nearest whole number.
Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
3 0

Answer:

A is 27 i think and B is 15 i think

Step-by-step explanation:

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I’m confused and need help
Zielflug [23.3K]
Okay so basically you will need two sets of working out.
Sandra:
I=PRN
=14000x7x0.045
=4410
Cindy:
I=PRN
=14000x7x0.06
=5880
5880-4410
=1470
Therefore, Cindy earnt $1470 more than Sandra after 7 years.
5 0
3 years ago
Given the function rule f(x) = x² – 3x + 2, what is the output of f(–2)?
nekit [7.7K]

Answer:

D(12)

Step-by-step explanation:

(-2)^2 + (-3)(-2) + 2 = 12

3 0
3 years ago
Read 2 more answers
Data from a sample of citizens of a certain country yielded the following estimates of average TV viewing time per month for all
Alexeev081 [22]

Answer:

D. ​Inferential, because the statistics are used to make an inference about the population

Correct, the objective of this study is obtain information from the population with a sample and then use any method to estimate the population mean, the parameter of interest.

Step-by-step explanation:

An inferential study consists in take information about a population by a sample and use this information to see what would be the possible values for the population of interest

By the other hand a descriptive study is obtained from observing and measuring some variables of interest but without manipulate the data.

For this case we have sample averages for the viewing time per month.

Let's analyze one by one the possible options:

A. ​Inferential, because the statistics are used to describe the sample

False the study is inferential but the idea is not just obtain information about the sample, we want to see the population parameters not the statistics

B. ​Descriptive, because the statistics are used to describe the sample

False for this case we have averages calculated from the sample mean and is not possible to consider this study as descriptive.

C. ​Descriptive, because the statistics are used to make an inference about the population

False, the statistics are used to make an inference about the population, this statement is correct, but the problem is that this study is not descriptive.

D. ​Inferential, because the statistics are used to make an inference about the population

Correct, the objective of this study is obtain information from the population with a sample and then use any method to estimate the population mean, the parameter of interest.

8 0
3 years ago
5x + 2y = 7
MArishka [77]
<h3>Answer:</h3>

(5/7, 12/7) <- I think you meant to type that. Its the first one

<h3>Step-by-step explanation:</h3>

Step 1: Substitute y=x+1 in for y in 5x + 2y = 7

5x + 2(x+1) = 7

Step 2: Solve it

5x + 2x + 2 = 7

       7x + 2 = 7

             - 2  - 2

              7x = 5

              ---    ---

               7     7

                x = 5/7

Step 3; Plug x into y=x+1

y = 5/7 + 1

y = 12/7

8 0
3 years ago
Read 2 more answers
The formula s = sqrt 30fd relates the speed S in miles per hour a car was traveling to the length d in feet that the car skidded
pishuonlain [190]

Answer:

b.

Step-by-step explanation:

30×0.5×63 = 945

this is not a square number. therefore, the sqrt(945) is a number of infinite digit positions after the decimal point without repeating pattern.

so, it is a prime example of an irrational number.

3 0
3 years ago
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