Where is the answer to the expression 4 − 8 located on a horizontal number line?

4 units to the left of 4
4 units to the right of 4
8 units to the left of 4
8 units to the right of 4

41/17 as a decimal rounded to the nearest hundredth

Which of the following shows the length of the third side, in inches, of the triangle below

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