What is the solution as an inequality?
(simplify your answer, type N if there is no solution. Type i if there is an infinitely more solutions)
Express the solution in interval notation
(type N if there is no solution)
2007-02-28 02:43:06 · 7 answers · asked by LiveWire401 1 in Science & Mathematics ➔ Mathematics
-3x-8<-5
3x> -3
x> -3
2007-02-28 02:49:03 · answer #1 · answered by Maths Rocks 4 · 0⤊ 1⤋
-3x-8<-5
-3x<3
x > -1 [remembering change in inequality sign with dividing by a negative number]
interval notation (-1, infinity)
2007-02-28 10:54:42 · answer #2 · answered by Michael 2 · 1⤊ 0⤋
-3x-8<-5
-3x<8-5
-3x<3
therefore -x<1
thus x>-1
& hence infinitely many solutions
in the interval form (-1,infinity)
2007-02-28 10:49:39 · answer #3 · answered by Kiran 143 1 · 1⤊ 0⤋
-3x - 8 < -5
-3x < -5 + 8
-3x < 3
x > 3 / -3
x > -1
you need to do a ' change' in direction when you divide or multiply by a negative number.
2007-02-28 10:49:16 · answer #4 · answered by Matthew N 5 · 1⤊ 0⤋
-3x -8 <-5
-3x <3
x > -1
-3x -8< -5 for all x>-1
2007-02-28 10:50:25 · answer #5 · answered by jaybee 4 · 1⤊ 0⤋
here it is step-by-step:
-3x - 8 < -5
-3x < -5 + 8
x < 3/(-3)
x < -1
interval notation: (-infinity, -1)
2007-02-28 10:48:45 · answer #6 · answered by derrick-fish 1 · 0⤊ 1⤋
-3x-8<-5
-3x<3
x=-1
2007-02-28 10:48:51 · answer #7 · answered by christine m 1 · 0⤊ 1⤋