Which pairs of lines are perpendicular? y=3x-5y=3x−5 and y=3x+4y=3x+4

y=3x-5y=3x−5 and y=1/3x-5y=1/3x−5

y=3x-5y=3x−5 and y=-1/3x-5y=−1/3x−5

y=3x-5y=3x−5 and y=-3x-5y=−3x−5

Step-by-step explanation:

WHO THE HELL CARES

c-  well the third onee

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076