Answer will be a fraction. A group of coins is shown below.
What is the probability and its
complement of randomly
selecting a nickel?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

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