What are the values of a and b in the equation (4x^a) ^b = 256/x^8

1. a= 2, b= 4
2. a= -2, b= 4
3. a= -2, b= -4
4. a= 2, b= -4

Me! #1 write an equation for the interior angles of this triangle that uses the triangle sum theorem. #2 what is the value of x? #3 what is the measure of #4 classify the triangle above as acute, obtuse, or right. state your reason in a complete sentence.

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap