If two lines are parallel, which statement must be true?
a. their slopes are negative reciprocals.
b. their slopes are equal.
c. their slopes are reciprocals.
d. their slopes are opposites

What is the first step of an indirect proof of a number that is divisible by two

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?