What is the difference between an algebraic expression and a numerical expression

Mark and his friends order two pizzas of the same size the first pizza is cut into 6 slices of equal size the second pizza is cut into 4 slices of equal size each person plans to take 2 slices of pizza Mark concludes that he would get more pizza by

The length of the side of square A is 50% of the length of the square side expressing the area of the shaded area of square A as a percentage of the area of square B.

Is 17/4573 a whole natrual or integer

If $7=x^2+/frac{1}{x^2}$, then what is the greatest possible value of $x+/frac{1}{x}$?

Is - 3 a solution to the equation 3x-5=4+2x

Jack ran two miles Jesse ran 4 times as far there are 5280 feet in a mile how many feet did Jesse run

What is the value of x? 3 / 4 x+5 - 1 / 2 x=3

A pie is cut into 9 equal pieces. If all but 3 pieces are eaten, how of the pie remains?

The ratio of the measures of the angles in a triangle is 2:9:4 what is the measure of the largest angle?

There are 514 children in all at both Peter's and Nada's schools. Nada's school has 185 children. About how many children go to Peter's school?