Probolobo

Schau mal hier nach:

Die Wurzel von e ist etwa 1,65. Diesen Wert kannst du mit unserem Rechner hier auch selbst herausfinden.

Bildet man das Produkt zweier Potenzen mit gleicher Basis, so werden die Exponenten addiert.

Das bedeutet bei dir:
 

\(x^\frac{3}{4} \cdot x^\frac{4}{3} = x^{\frac{3}{4}+\frac{4}{3}} = x^\frac{25}{12}\)

Dein Ansatz passt, du musst eigentlich nur noch 50 durch 18 teilen & abrunden. Das Teilen kann dir der Taschenrechner abnehmen.

Of course π/10+3π/10 =2π/5, not π/5, sorry! So a+b=2+5=7, as CPhill said. 

You got another pn, somehow I can't edit my answer to be complete. What I wanted to say is that an acute angle is between 0 and 90° (strictly, so 0° and 90° aren't acute).

Somehow the forum wouldn't let me edit my answer: 

An acute angle is an angle x with \(0

Also, it's not late for me since I'm from Germany - it's actually 0800 :D

I think I got it now. Didn't notice the word "acute", probably because I usually don't do math in english.

An acute angle is an angle x with 0

There are still more solutions: all angles of the form \(\frac{(2n-1)\pi}{10}\) (with n a natural number). So with n=1, we get your solution π/10, and with n=2, we get 3π/10. n=3 gets us π/2, wich is no acute angle, so π/10 and 3π/10 are the only solution to your question. That let's us solve the rest: The sum is π/5, so a+b=6.

I can't read lol. "sum of these angles" - of course you need to sum the answers.

With the two answers π/10 and π/2, the sum is π/10+π/2=π/10+5π/10 = 6π/10 = 3π/5. So the sum a+b is 3+5=8.

Your solutions are correct, but you don't need to add them. The sum a+b is  neither 1 or 0, but it's 11: Your solution is π/10=1π/10, so a=1 and b=10.

Another solution would be π/2. With this solution the sum a+b would be 3.