1) The ratio of two complementary angles is
4:1. Find the measure of both angles.

18 and72

Step-by-step explanation: Since the angles are complementary, they add to 90°. So we can write the equation: x represents the first angle, and 4x represents the second. x+4x=90. 5x=90. x=18. So the first angle is 18° and the second is 72° (18*4) Hope this helps.

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

table 3 represents a direct variation function. : )