3.
Let the points be A, B & C.
The three distinct segments are AB, BC & AC.
8x - 12 = 4x
8x - 4x = 12
4x = 12
x = 12/4
x = 3
You can multiply the number of laps each person ran by the yards in each lap and then add them together:
440 + 2(440) + 3(440) + 4(440)
= 440 + 880 + 1,320 + 1,760
= 4,440 yards
Or you can add the laps first, then multiply by the yards in each lap
(1 + 2 + 3 + 4)(440)
= 10 x 440
= 4,400 yards
No actually you can just multiply both sides of the equation by 2 and get y-4=20. then add 4 to both sides to get y=24.
B. 250 cm3 hope this helps
