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75% of 54 is 40.5

y = (1/8)(1/2)^-2n    =  (1/8)(2)²ⁿ = (1/8)(4)ⁿ     for n = 1.2.3.4.......

r = 27/(-9) = -3. 

4th term = -81(-3) = 243

5th term = 243(-3) = - 729

5+z = 10

10 is the correct answer

i think: 

the first two can be any number so there is 36 possibilities on the third you are not allowed to repeat so yo you have 35 posibilities on the fourth one you can put any character so you have 36 and so on:

(36-2)/2=17

36^2*35^17*36^17 = 65902860965567704608604298035681925529600000000000000000

i think i understood it wrong that is why i get a very big number :)

KERBALS

Is that jebadiah?

And this would be counted as unreal due to a negative under a square root

Let me show you

3b^2=-81

b^2=-27

b=sqrt(-27)

But if you wanted unreal then the final answer is

b=3*I*sqrt(3) or -3*I*sqrt(3)

SpawnofAngel will give the answer.

How to divide fractions:

1. Multiply the number by the reciprocal of the fraction.
2. Simplify the resulting fraction if possible.
3. Check your answer: Multiply the result you got by the divisor and be sure it equals the original dividend.

3/2 miles in 1/16 of an hour

time 3/2 by 16 to get an hour

48/2 miles

24 miles

And holy c**p that  is fast

You mean 256.

trying to symplify it.

Spawn is correct: 9*8 = 72

They are factors

9+8 = 17

Correct

multiply 4 by 4 then 4 by 16

4*4*4=56in^3

what are you trying to do?

Thanks CPhill :)

so the circumference of the circle is 56.55

\(Circumference=diameter \times \pi \\ d={c\over \pi} \\ d={56.55\over\pi}=18(aprox.)\)

Diameter of a circle = circumfrence / pi 

d = 56.55 / 3.14

d = about 18.01

The diameter of the circle is about 18.01 meters long. 

0.6

Nice job, Solveit......

okay thank you CPhill.