Find all the solutions and write answer in a general form.
6 sec2(x) − 6 = 0

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

43lbs of tomatos cost $387. how much would 41lbs cost

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers