We are essentially asked to find the inner perimeter of the track. We already know the length of the inner parallel lines of the track, which has been stated to be 100 m. What we need to solve for now is the circumference of the semicircles that make up the ends of the inside of the track. Since there are two semicircles, these combine to form one full circle so we can use the formula to find the circumference of the circle with a diameter of 60 m, which was given to us. With a diameter of 60m, the radius will be 30m. Now we can solve this problem.
C = 2πr
C = 2π(30)
C = 60π
The semicircle ends of the track are a distance of 60π m, and now we simply add the lengths of the inner track which are 100 m each. Therefore, the total distance of the inner track is:
P = 60π + 100m + 100m
P = 200 + 60π
P = 388.5 m
Answer:
F) 63
Step-by-step explanation:
Find the original total stories 10 + 8 + 16 + 8 = 42.
Original ratio of Mary's stories to total stories is 8/42 or 4/21.
Then form equation 4/21 = 12/x ; multiply both sides of 4/21 by 3.
4/21 = 12/63
The students need to write 63 stories to keep the ratio of Mary's stories to total stories the same.
Answer:
C) 2
Step-by-step explanation:
Answer:
Step-by-step explanation:
Because the coordinates for x = 0 is (0,-2) so that's your y- intercept.
Then if you all you have to do is make sure that you have the correct slope.
So i just made a table on paper and started going up and seeing what slope i'd need to match the table on the screen.
