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\[(x/4 - 1/x)/[1/(2x) + 1/4]\]
First multiply denominator and numerator by 4x. You will obtain (x^2 - 4)/(x+2)
and then x+2 cancel out right?
Expand the numerator to get (x+2)(x-2)/(x+2)
f(x)=1/27-3^x for which value is x undefined?
When x is not equal to 3
whenever the denominator equals zero, so at x = 3
solve for x: log small 8 (x+1)=2/3
Raise both sides to the 8
sorry i had to leave... others helped anyway
The cube root of 8 is 2; 2-squared is 4
So , x+1 = 4
x = 3
write the full expansion of (3x+2)^4
That may take a while. You know about pascal's triangle right?
yeah i think i got the answer anyways i will give you another problem
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?
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
Between what two values does 68.2% of the distribution lie?
You have any problems not related to statistics? Or these are the only ones?
these are the only ones