Stephanie played soccer for 2.25 hours before lunch. She played again in the afternoon for 1.5 hours how long did Stephanie play soccer

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Ill mark the brainliest if you me with the these three questions 7,8,9

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: