2/w = x/5. explain the solution to me step by step
2007-09-30 04:55:36 · 10 answers · asked by rene w 2 in Science & Mathematics ➔ Mathematics
solve for w
2007-09-30 06:56:14 · update #1
2 / w = x / 5
10 = w x
w = 10 / x
2007-10-01 03:04:05 · answer #1 · answered by Como 7 · 0⤊ 0⤋
This equation is really easy for me (since I am on the second level of calculus and am only a high school senior!):
2/w = x/5
1. cross-multiply.
xw = 10
2. solve for w.
w = 10/x
3. plug this into the original equation.
2/ (10/x) = x/5
4. solve.
2/1 * x/10 = x/5
2x/10 = x/5
x/5 = x/5
This tells you that the w=10 (since 2x/10 = 2/w) and x=1.
Hope this helps!
2007-09-30 16:31:44 · answer #2 · answered by allstargurl522 3 · 0⤊ 0⤋
There is NO "solution" since you have ONE equation with TWO variables.
One can solve sets of equations ONLY if the number of variables equals, or is less, than the number of equations.
Laurie
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2007-09-30 12:06:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I apologize, but it cannot be solved, without knowing for information. You have two unknown variables in a single equation, and no way to determining the value of either. However, you can solve for either variable...
To solve for x...
2/w = x/5
(Multiple both sides by 5)
10/w = x
To solve for w...
2/w = x/5
(Multiple both sides by w)
2 = xw/5
(Multiple both sides by 5)
10 = xw
(Divide both sides by x)
10/x = w
2007-09-30 12:05:00 · answer #4 · answered by rugged_rock 2 · 0⤊ 0⤋
well, by this equation we understand "w*x=10"
now here we don't have any idea since there are some other explanations of the two variables noticed in your problem state, for example if it says "w" is a right number and "x>6", you will find out that "x=10" and "w=1".
It may that the information about the variables are implicite in the problem, so i recommand you to read the problem state again carefully!
2007-09-30 12:27:00 · answer #5 · answered by S.Reza K 2 · 0⤊ 0⤋
With a single equation containing two unknowns (w and x) you cannot find the solution to both.
However, if you cross-multiply,
You get: wx = 2X5 = 10
so you could say the above, or x = 10/w
or w = 10/x
2007-09-30 12:07:56 · answer #6 · answered by Mike Joy 3 · 0⤊ 0⤋
2/w = x/5
w = 5/x * 2
w = 10/x
Answer: w = 10/x
Prove the equality of both sides of the original equation by plugging w with 10/x:
2/w = x/5
2/(10/x) = x/5
2 * x/10 = x/5
2x/10 = x/5
x/5 = x/5
2007-10-04 05:57:36 · answer #7 · answered by Jun Agruda 7 · 2⤊ 0⤋
there is no solution because there are 2 variables and 1 equation. you can, however, solve for either variable in terms of the other.
x in terms of w: x=10/w
w in terms of x: w=10/x
2007-09-30 12:00:06 · answer #8 · answered by Anonymous · 0⤊ 0⤋
I guess I'll start off by solving for x.
2/w = x/5 so multiply both sides by 5
10/w = x and you're all done.
If you're solving for w then
2/w = x/5 multiply both sides by w
2 = wx/5 Now multiply both sides by 5
10 = wx and divide both sides by x to get
10/x = w
Doug
2007-09-30 12:01:53 · answer #9 · answered by doug_donaghue 7 · 0⤊ 0⤋
IT MEANS. THAT TWO DIVIDED BY DOUBLE YOU, EXUALS EX DIVIDTED BY FIVE. PSSH I HATE ALGERBRA!!! that stupid double equation thing is loong gone out of my head by now. sorry kid.
haha, that sucks. too bad.
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2007-09-30 11:59:36 · answer #10 · answered by Anonymous · 0⤊ 2⤋