What is the estimated difference difference of 4 9/10 - 1 1/12? A) 4
B) 3 1/2
C) 3
D) 2 1/2

Can someone me out here and the tell me the greatest common factor

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

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