To prove the SAS (side-angle-side) postulate, a. <XWY=<ZWY needs to be marked congruent. Since the segment WY=WY due to the reflexive property, we need an angle between them to prove SAS, which has to be XWY and ZWY.
P=1/5. factor out the p to get 4p-15pn=4/5p-3n and just solve to get p=1/5
DBA stands for discussion based assignment. so you go to the meeting and talk about your strengths and weaknesses
For which variable?
solve for y
y=x+30
solve for x
x=y-30
Hope this helps:)