Simplify. 8xy + 12x - 6x + 13xy

Which type of quadrilateral has diagonals that will always divide it into four congruent triangles?

Stella walks down a flight of stairs to the basement. Then she walks back up the stairs and up another flight of stairs to the second floor of her house. Each flight of stairs represents a change of 12 feet in height.

Ken's contest entry, why honesty is important must be 100 words or less. Ken gets about six words on one line of his notebook paper. About how many lines can he write without going over the 100 word limit.

The coordinates A (0, 0), B (0, 3), C (3, 3) and D (3, 0) are graphed and connected together. What 3-dimensional shape will be created when this shape is rotated about the y-axis?

True or false, when n is an negative integer, n-n=0

The measure of the supplementary of an angle is 40 more than 2 times the measure of the complement of an angle. Find he measure of the angle.

99 Over 25 as a terminating decimal.

The sum of two numbers is 35. The larger number is 13 more than the smaller number. What are the numbers?

Subtract. - 21 - (-13) a. - 34 b. - 8 c. 8 d. 34

What is 1/2 of 1% of 190 tons?