Please answer each question if you can. I am taking a timed test and I do not understand. All of the following are equivalent except .

7.5:4.5
5 is to 3
15/5
45/27

Solve for the variable in the following proportion.
4/7 = x/161
x=___

Solve for the variable in the following proportion.

1/4 is to 1 1/4 as 2 is to b
b=___

Solve for the variable in the following proportion.
5/25 = m/125
m=___

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