Question

simplify: x/(4) -1/(x) divided by 1/(2x)+1/4

Answer 1

\[(x/4 - 1/x)/[1/(2x) + 1/4]\]

Answer 2

ok..

Answer 3

x-2

Answer 4

First multiply denominator and numerator by 4x.
You will obtain (x^2 - 4)/(x+2)

Answer 5

and then x+2 cancel out right?

Answer 6

Expand the numerator to get (x+2)(x-2)/(x+2)

Answer 7

Sure

Answer 8

f(x)=1/27-3^x for which value is x undefined?

Answer 9

When x is not equal to 3

Answer 10

whenever the denominator equals zero, so at x = 3

Answer 11

solve for x: log small 8 (x+1)=2/3

Answer 12

Raise both sides to the 8

Answer 13

sorry i had to leave... others helped anyway

Answer 14

The cube root of 8 is 2; 2-squared is 4

Answer 15

So , x+1 = 4

Answer 16

x = 3

Answer 17

write the full expansion of (3x+2)^4

Answer 18

That may take a while. You know about pascal's triangle right?

Answer 19

yeah i think i got the answer anyways i will give you another problem

Answer 20

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?

Answer 21

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

Answer 22

Between what two values does 68.2% of the distribution lie?

Answer 23

You have any problems not related to statistics? Or these are the only ones?

Answer 24

these are the only ones