Big Ideas Math: Modeling Real Life, Grade 7
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Exercise 10 Page 402

What is the sum of the measures of two complementary angles?

Classification: Complementary angles.
Value of x: 28

First, let's take a look at the given diagram.
Because the angles in the diagram make up a right angle, we know that they are complementary angles. Since the angles are complementary, we know that the sum of their measures should equal 90^(∘). With this in mind, we can create an equation. (x+6)^(∘) + 56^(∘) = 90^(∘) Let's solve this equation for x. We can remove the degree sign to make calculations easier.
(x+6)+56=90
x+6+56=90
x+6+56-62=90-62
x=28