6, 6, 6, 7, 10, 11, 12, 13, 14, 14, 14, 15, 16, 18, 18 Calculate the Mean Absolute Deviation (MAD) of the data set (Round off to the nearest tenth)

Me because some of question i don’t understand

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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: