Help
I struggle with these kind of questions
I think I need to learn something maybe but the logic always has me weirded out
0
u/Brief_Peace1703 35 1d ago
for the first one i just test each answer choice by giving a and b numbers that satisfy the answer choies (eg if i was testing option g i would say a=15 and b=10 and see if its true) so its j
for 23 idk if this the best way to do it so going to the second condition id just multiply it by -1 on both sides to get. s-t=-1 so s-t/st is -1/st and going back to the first equation i can multiply also by -1 on both sides but when you multiply/divide by negative numbers for equalities you gotta flip the sign so you get st>0 so st is positive so that means -1/pos so its negative so c
for 33 id just plug it into desmos and test values for z that give an integer result until a pattern emerges but i guess if you wanna actually do it you can split it into -28/2 - z/2 so -14 - 1/2(z) so if z is a integer the only way 1/2(z) could also be an integer is if its even (aka a multiple of 2 or else the 1/2 will make it a decimal which isnt an integer) so f
idk if any o fthat made sense
1
u/Preethi2000 1d ago
I generally solve them by substituting the values for an and b. In this case, let’s pick option J. If a-b=1, the. | 1-1| will become zero. That cannot be true