what is -21/3 in simplest form?
is that answer and -1/5 considered perpindicular if they were line slopes?
2006-10-04 08:35:39 · 4 answers · asked by Ash1227 2 in Science & Mathematics ➔ Mathematics
-12/3=-7
no
a line with slope -7 is NOT perpendicular to a line with slope -1/5
2006-10-04 08:38:07 · answer #1 · answered by Anonymous · 0⤊ 0⤋
What (positive) factors do -21 and 3 have in common? Divide those out. (You should get a whole number, N/1, or just N.)
Take two slopes, b and c. If b*c = -1, the oblique lines are perpendicular. If one is merely horizontal and one vertical, then they are. If both tests fail, then no.
HTH.
2006-10-04 09:00:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
3 x 2=6 +1=7
example of another : 6 1/2= 2 x 6 = 12+1=13 see?
2006-10-04 08:50:04 · answer #3 · answered by serious 4 · 0⤊ 0⤋
-21/3 = -7.
Two line slopes are perpendicular if the product of their slopes is -1, so in this case, no.
2006-10-04 08:40:52 · answer #4 · answered by James L 5 · 0⤊ 0⤋