-3x-4<19
19+4=23
3x<23
÷3 ÷3
×= > 23/3 or 7.6^87
Answer: One 8-cm pipe (Its is greater than the total area of of two 4-cm pipes)
Step-by-step explanation:
The area of a circle can be calculate with this formula:

Where "r" is the radius of the circle.
We need to calculate the area of 8-cm pipe. In this case:

Then, substituting the radius into the formula, we get:

Now we must calculate the area of the two 4-cm pipes.
Since they are two pipes, the formula is:
In this case:
Then, substituting into the formula, we get:

Therefore, since the area of one 8-cm pipe is greater than the total area of of two 4-cm pipes, we conclude that the pipe configuration that can deliver more water to residents is:
One 8-cm pipe
Answer:
P(company) = P(ride with friends) + P(with parents) = .23 + .4 = .63 0r 63%
Step-by-step explanation:
The 3 different case scenarios are independent of one another:.37 + .23 + .4 = 1
P of two of them occurring is found by adding their individual Probabilities
Answer:
21/4
Step-by-step explanation:
(5 * 4) + 1
20 + 1
21/4
1. It is the subset of a group - Group sample.
2. It equally favors all members of a group sample
- Random sample.
3. It collects data on members of a group - Survey.
4. It does not equally favor all members of a group - Biased sample.
5. It includes all members of a group
- Population.
6. It analyzes data collected from a group - Mean.
I have matched all concepts in accordance with statistical use, hope it helps.