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.

D. Randomly draw and replace a card 100 times. Then, observe how close to 20 times a club is drawn.  

Step-by-step explanation:

We are given that,

Martha predicts that 'whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time'.

Now, according to the options, we see that,

If she randomly draw and replace a card 100 times and then observe how close to 20 times a club is drawn.

Her prediction is most likely to be true.

As, 20 out of 100 times is th of the total time.

Hence, option D is correct.

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

step-by-step explanation:

if you want to separate 54 into 6 individual tiers then you need to divide if you want to separate 54 into 6 individual tiers then you need to divide 6 and 54.

if you divide 9 by 6 you will get 54.

- hope i .