Simplify the expression (3-9i)(10+i) write your answer in a+bi form

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?

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

Using elimination, what is -4x+2y=-12 4x+8y=-24