Jonas has 40 marbles. he gave 1/5 of the marbles to marvin and 3/8 of the marbles to leroy. how many marbles did each boy get?

What is the missing constant term in the perfect square that starts with x^2 -20x

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply