20/48 equals what as a percentage

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations