The blue line should be solid because the inequality has “or equal to.” The green shading should be on the other side of the blue line. The blue line should be part of the solution set.
Choosing 3 persons out of the four persons available in for the committee, we use the concept of combination, 4C3 = 4 The statements that are true for this item are: A, B, and D.
You will use x amount of 60% solution and y amount of water. Altogether, you will make 10 L of 50% solution. The first equation is: x + y = 10 Do you understand it so far?
