If abc = 40o, what is the measure of its complement cbd?
a) 40o
b) 45o
c) 50o
d) 60o

What is the square root of 45? (step by step working plz)

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?