Doris takes a survey of her class and finds that 2 of the 20 students in class are left-handed.

if there are 550 students in her school, how many of them would she expect to be left-handed?

Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

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