The twenty dash twotwenty-two members of the mathematics club must send a delegation to a meeting for student groups at their school. the delegation can include as many members of the club as desired, but at least one member must attend. how many different delegations are possible?

The number of subsets of a set of 22 elements is 2^22 = 4,194,304. This count includes the empty set, which is the one delegation that is not allowed.

There are 4,194,303 delegations possible.

answer: 0.95, d

step-by-step explanation:

first, you have to combine the percentages of costumers ordering pizza or salad. 25% (percent of salads ordered) plus 70% (percent of pizzas ordered) is equal to 95%. then, turn 95% into a fraction: 95/100. lastly, divide 95 by 100 and you will get 0.95, d.

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!