Pedro dispone en 2013 de una maquina para viajar el el tiempo. Decide avanzar 240 años! En que año se encontraria? Y si retrocede 390 años! A que año viaja?

The area of one of the small right triangles outlined in blue is A cm2, while the area of the square outlined in red is B cm2. Which expressions show the area of the shaded region in terms of A and B? Check all that apply.

Simplify the expression. (6+8) : 2 a. 10 b. 28 c. 7 d. 11

Ron is half as old as Sam, who is three times as old as Ted. The sum of their ages is 55. How old is Ron?

In how many arrangements can a teacher seat 3 girls and 3 boys in a row of 6 seats if the boys are to have the first, third, and fifth seats?

Mr. Perez earned $320 this week for 40 hours of work. How many more hours would he have to work to earn $416?

Which is greater - 31 3/7 or 31.1

40 girls and boys have planned for unnaual function: They are in a ratio of 2 girls to 6 boys. How many boys are there?

Solve the system of equationsy=6x^2-5x+1, y=-2x+4

The relationships between the price and the number of a program sold is linear

The commutative property Addition states that you can change the order of addends in a sum. The associative property of addition states that you can change the grouping of addends in a sum.