H is between points Q and R. QH=19 and HR=10. What is the length of QR?

a. 29
b. 9
c. 19
d. 10
e. none of these

What is the product of the radical expression. (7-2square root) (8+2 square root)

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Solve the equation for b: a= (1/2)(b)(h)