So Im really confused.. Im helping my friend out with a math question, and I need some help, cause im stumped.
3/8 = n/128.
Aka: three over eight, equals, n over one hundred and twenty-eight.
How do I do this, and whats the answer?
2007-12-02 09:15:36 · 6 answers · asked by chatterbox_2122 2 in Science & Mathematics ➔ Mathematics
x 128 on both side of the eq
n = 48
2007-12-02 09:19:35 · answer #1 · answered by norman 7 · 0⤊ 0⤋
guess you need to know what N is?
get the denominator the same - th ebit below the line
well 128 is bu=igger than 128 so there are 16 x 8 =128
so
3x16/8x16=n/128 (as 128 is really 16x8)
48/128 = n/128
as /128 is common to both sides you can ignore it
so n=48
ignore the first answer given, its wrong!
2007-12-02 09:21:52 · answer #2 · answered by Dad 6 · 0⤊ 0⤋
ok cross multiply.
3*(128) = 8*n
3*(128) /8 = n
384 /8=n
48 = n
2007-12-02 09:19:46 · answer #3 · answered by a c 7 · 0⤊ 0⤋
cross multiply which will be 8n=384. to solve that divide 384/8 which is 48
2007-12-02 09:24:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
d is the reply you're watching for, how a long way the man will journey. r is the cost he's touring, 75mph. t is how lengthy he's touring, 6hours. Plug what you recognize into the components. d = seventy five(miles/hour) * 6(hours) d = (seventy five * 6)miles Can you do the leisure?
2016-09-05 19:09:36 · answer #5 · answered by Anonymous · 0⤊ 0⤋
37548
Cross Multiply
2007-12-02 09:18:58 · answer #6 · answered by Anonymous · 0⤊ 0⤋