For the inverse variation equation xy = k, what is the constant of variation, k, when x = 2 and y = 5?

a. 10

b. - 2/5

c. 5/2

d. 10

the ratio of men to women in a village is 12: 25. if there are 120men, (a) how many women are there?, (b) what is the total number of men to women

What expressions are equivalent to - 56z + 28

Solve the system of equations: f (x) = -6x+2 and g (x) = - 2x+4. What is the value of x?

A 14 foot ladder is leaning against a building. The ladder makes a 45 degree angle with the building. How far up the building does the ladder reach?

Jason's football team lost 6 yards from their starting position and then lost another 5 yards. What number represents a loss of 6 yards? A loss of 5 yards?

A rental car agency charges a flat fee of $139.00 plus $30.00 per day to rent a certain car. Another agency charges a fee of $13.00 plus $51.00 per day to rent the same car. Find the number of days for which the costs are the same.

How to find the radius of square that tells you length, width, and height.

Ruben has two congruent wooden dowels. He cuts one dowel in two in order to have three pieces to make a triangle. Explain why, despite having three sides, Ruben will not be able to make a triangle with his three pieces.

If John has 13 more Apple than jake and Mary has 26 less that jake and all together they have 236 apples how many Apple does each person have

Which of the following is a perfect square? 65, 144, 68, 131