If cos a = 3 over 11, then which of the following is correct? sec a = 11 over 3 csc a = 11 over 3 sec a = 3 over 11 csc a = 3 over 11 !

Y=4x^2+x-1 solve using quadratic formula

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

What is the sum of these mixed numbers 2 1/8 + 4 3/8