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17-5*4/2

This is the way I would do it: 5 X 4=20, 20/2=10,

17 - 10=-7

Your answer is:

14/18=7/9

17-5*4/2=

Let me just understand what you are trying to obtain: do you want the answer in "simplest radical form" to this expression: 3r.root of 8 DIVIDED by the 4th. root of 8? If that's what you are trying to get, the answer I gave you is the correct answer. It can't "b", because if you calculate it on a calculator, you get: 12 X 2.828427(or square root of 8)=33.941125.....etc.

You should have F_CB = 30*sin(alpha), and since alpha = 36.27° you should end up with a positive value for F_CB. (You need to resolve the 30N force parallel and perpendicular to BC - F_CB is the parallel component - not resolve F_CB into horizontal and vertical components.  alpha is the angle between the 30N force and the perpendicular to BC).

The above assumes AB exerts no force on BC and that the 30N is the only force in play.  However, if AB exerted a horizontal reaction force on BC, the net effect would still be for a tendency to stretch BC, hence for BC to be in tension.

I took a guess and got it correct! "b" was the answer.

THIS IS YOUR CORRECT ANSWER:2^(1/4)=   ∜2

Okay, maybe there is a mistake with the question. 

Thanks for helping you all!

Nothing of a, b, c, d is the answer.

Your answer is:

1/(x+y)^4

Look in your book, where they teach you statstics.

6+7=13

how do u make the square root of something radical form

Instead of writing  sqrt(2), you use the square root sign or symbol like this:

√2

8=16+8n

n=-1

36+14+n+8=75

n=17

16 over 81 to the power of minus 3/4

(16/81)^-3/4=1/((16/81)^3×4)

531441/16384

Thanks but those a, b, c, d are my choices. One of those is the answer.

Is this ok.?

Your answer is:

1/sqrt(5) (result in radians)
 

No i didn't. 

That's how I was given it, sorrry.

Sorry....your question doesn't make any sense to me....did you leave something out????

x^4+24=105    subtract 24 from both sides

x^4 = 81       taking the positive 4th root of both sides, we have

x = 81^(1/4)   = 3  units

cosx=24/26  using the cosine inverse, we have

cos^-1(24/26) = x =  about  22.62°

Thanks a lot!!!!!!! :)