Solve for x: (3x/5) + (x/3) > 6 x is a set of real numbers.
a) x > -(45/7)
b) x < 45/7
c) x > 45/7
2007-04-18 03:12:03 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Answer c).
(3x/5) + (x/3) > 6
multiply both sides by 15 (to get rid of the fractions)
9x + 5x > 90
14x > 90
x > 90/14
x > 45/7
Solving inequalities is pretty much like solving equalities (equations). However, when you multiply or divide the inequality by a negative number, the inequality sign changes!
Example:
2 > 1 (times -1)
-2 < -1
Hope this helps.
2007-04-18 03:15:33 · answer #1 · answered by M 6 · 4⤊ 4⤋
1) multiply both sides by 15 to get rid of the fraction
15(3x/5) + 15(x/3) > 6*15
9x + 5x > 90
14x > 90
x > 45/7
The answer is C
2007-04-18 03:19:28 · answer #2 · answered by mwebbshs 3 · 0⤊ 0⤋
(3x/5) + (x/3) > 6 multiply both sides by 15
9x + 5x > 90
14x > 90
x > 45/7
2007-04-18 03:17:32 · answer #3 · answered by Anonymous · 0⤊ 0⤋
(3x/5) + (x/3) > 6
14x/15 > 6
14x > 90
x> 90/14
x> 45/7
so C
2007-04-18 03:29:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
(3x/5) + (x/3) > 6
15(3x/5) + 15(x/3) > 15(6)
9x + 5x > 90
14x > 90
14x / 14 > 90 / 14
x > 90/14
x > 45/7
The answer is c
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2007-04-18 03:35:09 · answer #5 · answered by SAMUEL D 7 · 0⤊ 0⤋
all of us recognize that x-2 is a element of both the precise and bottom, as inputting 2 makes them both 0. the bottom comes out to x^2+2x+3; the precise comes out to x^2+5x+a million (I used a divider on line, i do not undergo in recommendations the thanks to lengthy divide!) Now enter 2 instantly: 15/(11)=a million.36
2016-12-04 06:09:48 · answer #6 · answered by byrne 2 · 0⤊ 0⤋
Looks like you already have the answer. Make an educated guess.
2007-04-18 03:15:08 · answer #7 · answered by Anonymous · 0⤊ 1⤋
id gess c
2007-04-18 03:23:10 · answer #8 · answered by Abbie B 1 · 0⤊ 0⤋