Answer:
Step-by-step explanation:
One
This is one of those exercises that the answer is ultimately "It depends." If we are talking about a trained athlete or just me running around the block. A trained athlete would carefully pace himself to have enough energy to finish. If he is not well trained, the correlation is negative. Even well trained athletes with increased time will have decreased speed. I'd say it is negative.
Two
It is causation. It is what fridges do.
Three
Another guess. It depends. People who play musical instruments do get better grades, especially if they do it well. It takes a great deal of discipline and concentration to play either the piano or violin. Correlation and causation are what is unrelated. I guess the answer is D
<u>Please</u><u> </u><u>put</u><u> </u><u>a</u><u> </u><u>picture</u><u> </u><u>next</u><u> </u><u>time</u><u> </u><u>:</u><u>)</u>
I'm estimating that this is about the 5th or 6th time that I've seen this
question posted on Brainly, and there's STILL not enough information
given to answer it. Maybe several different classes in several different
schools are all using the same textbook, and the book has a big mistake
in (at least) one of the problems.
Answer:
24 units ²
Step-by-step explanation:
In this problem, we are given the circumference of a triangle (after finding the perimeter) and want to find the area of a circle with that circumference. Since the area of a circle is a function based on its radius, we can use the circumference to find the radius to find the area.
First, we can figure out the perimeter of the triangle, which is equal to the sum of its sides. The perimeter is 6+4+7.21 = 17.21 units.
Next, the circumference of a circle is equal to π * diameter = π * 2 * radius. Using 3.14 for π and r for radius, we get
3.14 * 2 * r = 17.21
6.28 * r = 17.21
divide both sides by 6.28 to isolate r
r ≈ 2.74
Furthermore, to find the area from the radius, we can use
area = πr². Plugging 2.74 in for r, we get
2.74² * 3.14 = area
≈23.6, rounding up to 24 units ²