Answer:
1.56%
Step-by-step explanation:
A standard deck of cards has 52 cards, and 13 of these are hearts, as there are 4 suits, and 52/4=13. This means the probability of choosing a heart card from a deck of cards is 1/4, or 25%. Now to find the probability of doing this from 3 decks in a row, we simply cube 1/4 to get 1/64, and in percentage this is ~1.56%.
Use the law of cosines to find a:

So to use the given numbers you get:

Which would come out to equal about 35.94
so a=35.9
53.778 is the answer. I hope this helps and have a good day!
Answer:6.1638 7.69 8.18.04
Step-by-step explanation:
The difference between a zero and one, and b negative four and six is negative five and eight