Sec 4.3-4.5

Given: JK//MN
JL congruent ML
Prove: JKL congruent MNL

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

If you apply the changes below to the linear parent function f(x)=x what is the equation of the new function vertically stretched by a factor of 3 flip over the x axis

Math i have no idea how to do a and b