15. mr. clements painted his barn for hours in the morning. he painted
the barn for 5 hours in the afternoon. for 154-15c, select true or false
for each statement.
15a. a common denominator of
the mixed numbers is 20.
o true
false
o true
o false
15b. the amount of time spent
painting in the morning can be
rewritten as 3 hours.
false
15c. mr. clements spent 2 hours o true
longer painting in the afternoon
than the morning
16. tom exercised hour on monday and hour on tuesday.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.