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?

Which is part of the hydrosphere

Jenna has 8 pairs of jeans. Three of them are blue. What percentage of her jeans is blue?

N is an integer Which is greater? n or - n

Find the solutions to the equation below. Check all that apply. 4x2 - 4x - 3 = 0

Why is the absolute value of a nonzero number positive?

The sum of a number and twice its reciprocal is 27/5. Find the number.

Airbus is a major manufacturer of aircraft in Europe. Each of their A330 planes costs around 40 million dollars and Airbus' revenue (money coming in) can be modeled as a function of the number of aircraft it sells.

Which function has an inverse that is a function? A. b (x) = x^2+3 B. d (x) = -9 C. - 7x D. p (x) = lxl

Is 6.013 less than 6.08

What is nine 91, 284 rounded to hundred thousand