INCREDIBLY URGENT!
solve the equation: 2 sin(3x) = -1
[Put each step on a separate line - you may use radians or degrees for x, as long as you use the proper symbols] Each intersection between the two lines you graphed was a solution. Write down an expression for all the solutions. Use the variable "n" in place of an integer that, when you change it, gives you a new solution.

Step-by-step explanation:

2sin(3x)=-1

3x=invsin(-1/2)

what angle gives 1/2, 30 deg or pi/6

So formal solution is pi/6 but there is another on the other side, at 7pi/6

The 2 basic solutions are: 11pi/18 and 7pi/18

So the expressions are

(11pi/18+2npi/3)

and (7pi/18+2npi/3)

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation: