What is the subset of rational numbers

What is the distance from (3 and one-half, 5) to (3 and one-half, - 12) ?

Derive the equation from the parabola with a focus at (0,1) and a directrix of y=-1

What is the solution set of x^2-63=-2x a.) (7,9) b.) (-7,9) c.) (-9,7) d.) (0,21)

Suppose the population of a town is 100,000 in 1999. The population increases at a rate of 4.5% every year. What will be the population of the town in 2005? Round your answer to the nearest whole number.

How much is two plus two

The school cafeteria ordered macaroni and cheese for their monthly supplies. In the past 2 months they ordered 178 and 224 boxes for $105.02 and $132.16 respectively. Both times they had too much left over so this month they decided to buy 103 boxes.

Lamont has30 books to pack in boxes. each box holds 7 books. if he fills in each box how many books are left over?

What is the value of the expression? (15 - 7) • (3 + 5) A. 12 B. 29 C. 64 D. 41

Find the area of the circle when C = π/6. Give your answer in terms of π.

What is the solution to the system of equations? 4x-8y=-16 x-2y=-8 a. Use the substitution method to justify that the given system of equations has no solution. b. What do you know about the two lines in this system of equations?