Answer:
Step-by-step explanation:
Parallel lines divide transversals proportionally. I like to write the proportions so the variable is in the numerator. Then the solution is obtained by multiplying by the denominator of the variable term.
1. x/20 = (46 -16)/16
x = 20(30/16)
x = 37.5
__
2. (x +4)/13.5 = 4/9
x +4 = 13.5(4/9) = 6
x = 6 -4
x = 2
C
Girls - 28-12 = 16
16:12 = 4:3 - so answer choice C
Answer: (a) 36.07km, (b) 253.2°
(c) 19.18km
