If angle a = 11°, what does angle b equal?

Since both angles lie upon a straight line their sum must be 180°.

180-a=b and we are given that a=11°

b=180-11

b=169°

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.