Aproof may contain which of the following?

a. only theorems
b. definitions, postulates, and proven theorems
c. only postulates
d. only definitions

What value of x is in the solution set of –5x – 15 > 10 + 20x?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.