ABC is a straight angle which equation can be used to find the measure of the unknown angle

1. which of the following algebraic equations is equivalent to ? x^n = a a^n = x a^x = n x^a = n 2. 16^1/4= 1/2 2 4 3. (-36)^1/2= -6 1/6 no real number 4. 8^2/3= 4 8 16√2 )^5/2= 7,776 1/7,776 no real number 6. m ^ the square root of a^2m simplified is: 7. the square root of 3^3 times the square root of 2 simplified and in radical form is:

Which equation can be solved to find x the measure of jk in the apex

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?