Tutor profile: Adrian G.
Johnny is 100 meters from the base of a tree, observes that the angle between the ground and the top of the tree is 18 degrees. Estimate the height h of the tree to the nearest tenth of a meter.
Use the tangent tan(18o) = h / 100 Solve for h to obtain h = 100 tan(18o) = 32.5 meters.
Subject: Basic Math
Johnny has 10 apples, he gave Tim 3. How many apples does Johnny have?
10 - 3 = 7 Johnny has 7 apples.
Factoring Polynomials x^2 - 15x + 54
= x^2 - 6x - 9x + 54 = x(x-6) - 9(x-6) = x(x-6)-9(x-6) = (x-6)(x-9)
needs and Adrian will reply soon.