If CX = 12, XG = 2, and XH = 3, then XF =

a. 12

b. 8

c. 4.5

d. 2

How many $20 bills do you need to have to make $280

What expression is equivalent to 42x-56y

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given