james had 20 marbles more than Kevin. After Kevin lost 10 marbles, James had thrice as many marbles as Kevin. How many marbles did James have at first?

Find the coordinates for the vertex of the graph of the function y = 2x' + 2x - 4.

Round this number to the nearest tenth 88.35

Evaluate the expression: 10 + 7b

Shawndra said that it is not possible to draw a trapezoid that is a rectangle, but it is possible to draw a square that is a rectangle. Marcella said that it is possible. Who is correct? Explain your answer using the properties of quadrilaterals.

Write 1 1/3 as an impropper fraction

Simplify. (x5) 7 a. x12 b. x 2 c. x 35 d. x35

Christopher works at a nearby electronics store. He makes a commission of 10% on everything he sells. If he sells a television for $443.00, how much money does Christopher make in commission?

5c-15, what is the coefficient of the variable

4:7 : : m:42 I don't know how to solve this

What is bigger 8c or 2L?