7:
3/x-2/5x=13
a)1/5
b)1/3
c)1/8
8:
2/5x+1 – 2/3x+5=0
a)1
b)3
c)1/3
2007-06-08 18:44:02 · 8 answers · asked by ~♥♥♥~ 3 in Science & Mathematics ➔ Mathematics
okay, so problem eight had a typo, it was supposed to be 2/5x-1 – 2/3x+5=0
instead of 2/5x+1...
2007-06-09 05:25:24 · update #1
7.a
8. cant get ans, my ans is x=2, did you miss out anything?
sigh, can you include brackets next time?
2007-06-08 18:49:20 · answer #1 · answered by Anonymous · 0⤊ 3⤋
7. 3/x -2/5x = 13
15 - 2 = 65x
13 = 65x or x = 13/65 = 1/5
So a is the right answer
8. 2/5x+1 - 2/3x+5 =0
2(3x+5) - 2(5x+1) = 0
6x + 10 - 10x - 2 = 0
-4x + 8 = 0
8 = 4x and x = 2
None of the answers are correct. May be your problem definition is wrong (related to parentheses).
2007-06-08 18:52:29 · answer #2 · answered by Swamy 7 · 0⤊ 2⤋
a) and d)=2
2007-06-08 20:29:27 · answer #3 · answered by Shravan K 2 · 0⤊ 1⤋
3/x - 2/5x = 13
(15 - 2)/ 5x = 13
13/ 5x = 13
13 = 5x * 13
13 = 65x
x = 13/ 65
x = 1/5 (a).
2/5x + 1 - 2/3x + 5 = 0
2/5x - 2/3x = -1 - 5
(6 - 10)/ 15x = - 6
- 4 / 15x = -6
- 4 = -6(15x)
- 4 = -90x
x = 4/90
x = 2/45
This does not match up with your answers.
2007-06-08 20:17:53 · answer #4 · answered by Sparks 6 · 0⤊ 2⤋
7: the answer is 1/5
8: the answer is not any one of these but is -1/15.
2007-06-08 18:53:03 · answer #5 · answered by dragonball_z 2 · 0⤊ 2⤋
I appears like he does. a guy likes whilst a woman performs along with his hair, so if hes asking you to braid his hair then he likes you, if he treats you somewhat in yet differently then different yet in a teasing form of way he likes you because of the fact he needs you to word him, he needs you to communicate approximately him, and if he calls you with the aid of your final call, its like a nickname to him. those are all signs and indications that he likes you. wish i helped:)
2016-11-09 21:26:50 · answer #6 · answered by ? 4 · 0⤊ 0⤋
3/x-2/5x=13
15/5x-2/5x=13
13/5x=13
13=13X5x
13/13=5x
5x=1
x=1/5
2007-06-08 19:21:44 · answer #7 · answered by sam 3 · 0⤊ 2⤋
yeah yeah yeah. we heard this thing about the 10 points, but they never come.
2007-06-08 19:05:17 · answer #8 · answered by swd 6 · 0⤊ 1⤋