SAT Lesson 1 - Triangles (P4 of 6)

[Tupacbldz]

so ur saying everytime i see this kind of problmes i can choosee random numbers ?

[ARJU1993]

Wont it be easier with 1 as QS 2 as SV 3 for PT and 4 for PR?

[444zane3]

helpfull but can you go a tad bit faster in u next vids? :)

[Drav1212]

I just said SV = 2

[PrincetonJohn1]

Easier way: Make a simle observation, QS=1;QV=3; PT =3; PR =4; from that we have: Area of Tri. PST= 2*3/2=3; and Area of Tri. PQR= 3*4/2=6; then, 3/6=1/2 and your done. You must make smart observations instead of working too hard. On practice exams find the best ways to do each problem, there is always a fast way. Nice vid though.

[holagurl175]

in the beginning, when u cross multiply, is the 3/4 supposed to be one number?? bcuz if not, wouldnt u multiply the top by 4 and the bottom by 3??

[MiTeach]

Sorry yo no comprendo... Can you explain your question again? The problem gives us PT/PR=3/4. I just bring the PR to the other side...

[Icemonster8]

hahah i like your methods man! thanks for your vids

[zanpaktuh]

is it still gonna work if i just plug in the number that they gave and try to work it out?

[MiTeach]

try and find out! :]

[MiTeach]

good point, spinningbirdkick1! you could have just substituted in the numbers in the numerator and denominator of the given ratios. but to demonstrate the technique clearly, i wanted to sub in other numbers.

[SpinningBirdKick1]

Or you can save 3 mins of problem solving, not use substitutions, and use the proportions as the numbers themselves