Question 4646
1. complementary means they add up to 90 degrees.

Ratio is 4:1 --> total 5 multiply this up by 18 to make the 5 into 90:

ratio is now 72:18 --> total 90


so, the 2 angles are 72 and 18 degrees.


2. wire has ratio 3:1 --> total is 60inches.


Let x be shorter piece, so we have x and 3x and these together add together to give 60, so mathematically, we have 3x+x = 60


4x = 60
x = 60/4
--> x= 15 inches

and so longer piece is 45 inches.


jon.