how to solve for 'x'?
1/3x² - 22 = 35
2007-05-31 15:39:30 · 8 answers · asked by ania 1 in Science & Mathematics ➔ Mathematics
1/3x^2=57
X^2=171
X= plus or minus (171)^1/2
2007-05-31 15:43:17 · answer #1 · answered by pczdemon 1 · 0⤊ 0⤋
Disclaimer: I am currently on summer vacation. my answer may not be completely correct due to lack of school squeezing out my intellect.
ok, here we go:
1/3x2 - 22 = 35
1. add 22 to each side.
1/3x2 - 22+22= 35+22
1/3x2=57
2.now you want to get rid of the fraction rite? so just multiply the denominator (the bottom number) to both sides.
1/3x2 (3)= 57(3)
x2=171
3. x squared equals 171. now how do you simplify x squared? you take the square root. and what you do to one side, u hafta do to the other. so
(this is the part where you need a calculator.)
square root of x2= square root of 171
which is APPROXIMATELY 13.08
You could even check it but remember its not going to be exact because the answer is an approximation.
2007-05-31 15:54:45 · answer #2 · answered by jesslia 2 · 0⤊ 0⤋
First add 22 to both sides to get (1/3)x^2=57
Nexe multiply both sides by 3 to get x^2=171
Finally, just take the square root to get x=+-sqrt(171).
2007-05-31 15:44:00 · answer #3 · answered by bruinfan 7 · 0⤊ 0⤋
You really need to put in parenthesis. Is it 1/(3x^2) or (1/3)x^2 or even possibly 1/(3x^2 - 22).
2007-05-31 15:51:46 · answer #4 · answered by cicero 2 · 0⤊ 0⤋
add 22 to both sides
1/3x^2 = 57
times by 3 to both sides
x^2 = 171
take sq root of both sides
x = + or - sqrt171
2007-05-31 15:44:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
(x^2)/3 - 22 =35
(x^2)/3 = 57
x^2 = 171 = (9)(19)
x = +/- 3(sqrt19)
2007-05-31 15:49:06 · answer #6 · answered by knashha 5 · 0⤊ 0⤋
Multiply by 3 to get rid of the fraction. Then solve as usual.
2007-05-31 15:47:04 · answer #7 · answered by Anonymous · 0⤊ 0⤋
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2016-11-03 06:38:35 · answer #8 · answered by Anonymous · 0⤊ 0⤋