Perform the indicated operation and simplify the result. a^2-6a/a-6 • a+3/a Please help me I am in need of desperate help.

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

On a piece of paper graph f(x)=5•(0.4)^x

What is the probability of throwing several dice with sum equal to 6 (six)? show the ways of possibilities for sum 6 (as the numerator) and the ways of throwing n dices for n = 1, 2, 3, 4 or 5 as denominator for all the questions to earn full credits. (a)throw one die, (b) throw two dice, (c) throw three dice (d) throw 4 dice, (e) throw 5 dice