If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation.
2x − 3y = −29
x + 4y = 13

a. 2(4y + 13) − 3y = −29
b.2(−4y + 13) − 3y = −29
c.2x − 3(4y + 13) = −29
d.2x − 3(−4y + 13) = −29

What are “like terms”? why can we only add like terms?

What is the ratio of the length of an object in yards to the length of the same object in miles?

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