3let a = 2 2 3. (10 рoints) . which of the following statement is false? -1 a. for arbitrary 2 x 2 matrices b, c, if ba = bc then a = c b. at is invertible. c. for arbitrary 2 x 2 matrices b, c, if ab = ac then b = c d. aa-1 — a-1а. e. a1is a symmetric matrix.

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work:

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.