anonymous
  • anonymous
simplify: x/(4) -1/(x) divided by 1/(2x)+1/4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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bahrom7893
  • bahrom7893
\[(x/4 - 1/x)/[1/(2x) + 1/4]\]
anonymous
  • anonymous
ok..
anonymous
  • anonymous
x-2

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More answers

anonymous
  • anonymous
First multiply denominator and numerator by 4x. You will obtain (x^2 - 4)/(x+2)
anonymous
  • anonymous
and then x+2 cancel out right?
anonymous
  • anonymous
Expand the numerator to get (x+2)(x-2)/(x+2)
anonymous
  • anonymous
Sure
anonymous
  • anonymous
f(x)=1/27-3^x for which value is x undefined?
anonymous
  • anonymous
When x is not equal to 3
anonymous
  • anonymous
whenever the denominator equals zero, so at x = 3
anonymous
  • anonymous
solve for x: log small 8 (x+1)=2/3
anonymous
  • anonymous
Raise both sides to the 8
bahrom7893
  • bahrom7893
sorry i had to leave... others helped anyway
anonymous
  • anonymous
The cube root of 8 is 2; 2-squared is 4
anonymous
  • anonymous
So , x+1 = 4
anonymous
  • anonymous
x = 3
anonymous
  • anonymous
write the full expansion of (3x+2)^4
anonymous
  • anonymous
That may take a while. You know about pascal's triangle right?
anonymous
  • anonymous
yeah i think i got the answer anyways i will give you another problem
anonymous
  • anonymous
On a standardized test with a normal distribution, the mean was 64.3 and the standard deviation was 5.4. what percentile is a 74?
anonymous
  • anonymous
I'm a lil rusty with statistics. I'll look up a formula and do it, but post it to see if others can help with it aite
anonymous
  • anonymous
Between what two values does 68.2% of the distribution lie?
anonymous
  • anonymous
You have any problems not related to statistics? Or these are the only ones?
anonymous
  • anonymous
these are the only ones

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