Answer:
x=3
Step-by-step explanation:

Cross mutiply and x is equal to 3
I would say all you have to do is add those sides up then minus it with the total you’re trying to find
Answer:
(in image)
Step-by-step explanation:
sorry it's sloppy i used windows paint to fill it in but if the probability for heads is 2/7 then the probability for tails is 5/7. Multiply the probabilities for each situation to get answers.
Step-by-step explanation:
p=1/d
6=k/9
6×9=k
54=k
2=54/d
2×d=54
d=54/2
d=27
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