x and y are real numbers. ai and bi are imaginary numbers. When does ai + x = bi + y ? A. When a = b B. When x = y C. When a = x and b = y D. When a = y and b = x E. When a = b and x = y
E. When a = b and x = y
A company purchases cell phones at a cost of x and sells the cell phones at four times the cost. What equation below represents the profit made on each sell phone? A. x B. 3x C. 4x D. 3 - x E. 4 - x
C. 4x
Consider a class which has n students. In this class, t% of the students subscribe to digital TV packages. Which of the following equations represents the number of students who do NOT subscribe to any digital TV package? F. 100(n - t) G. (100 - t)n ÷ 100 H. (100 - t)n x 100 J. (1 - t)n K. n - t
G. (100 - t)n ÷ 100
In an isosceles triangle, the vertex angle is 36°. What is the measure of one of its base angles?
72°