The coefficients corresponding to k=0,1,2,5 in the expression (x+y)^5 are

What are the relative frequencies, to the nearest hundredth, of the rows of the two-way table? group 1: a 15 b 45 group 2: a 20 b 25

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)