Trigonometry Answers

In last week’s football game, Ralph scored 6 less than twice what Tommy scored. The sum of their scores is 30. How many points did Ralph and Tommy score individually?

cosec2A+cot2A=cotAA

tanA+cotA=2cosec2A

Solve, write your answer in interval notation and graph the solution set.

15a. 2x^2-5x less than or equal to 3

15b. (x+3)/(x-4) greater than 0

Solve, write your answer in interval notation and graph the solution set.

14c. |2x-1| + 7 greater than or equal to 1

14d. |5x+3| less than or equal to -1

Solve, write your answer in interval notation and graph the solution set.

14a. |5y-2| less than 13

14b. |x+1| greater than or equal to 5

Solve, write your answer in interval notation and graph the solution set.

13a. 9 - 2x greater than or equal to 5

13b. (x/2) greater than (2x-3)/5 + 1

Solve the given equation.

12a. |9x-4|=20

12b. |2x^2-x-1|=-5

Solve the given equation.

11a. x^(2/3)+6x^(1/3)=7

11b. (y+3)^2-8(y+3)+12=0

Solve the given word problem.

3a. In last week’s football game, Ralph scored 6 less than twice what Tommy scored. The sum of their scores is 30. How many points did Ralph and Tommy score individually?

3b. The ages of three sisters are three even consecutive integers. If the sum of the 1st, four times the 2nd, and twice the 3rd is 86, what are the three ages?

3c. You are buying a computer at a markdown price of $960. If the markdown price was 20% off the original price, how much was the computer originally?