Answer:
Tyty :)
Step-by-step explanation:
Answer:
gurl- what kind of math is this
Step-by-step explanation:
This is the "empirical rule." Approx. 68% of a data set lie within one standard deviation of the mean.
I would say either 110 or 131 if I might be wrong so check with a protractor first.
Answer:
2/5 or 2:5
Step-by-step explanation:
Face Card:
The face cards in a deck are the Jack, Queen, and King. There are 4 of each card (1 in each suit), for a total of 12 face cards.
Spade:
1/4 of all the cards in a deck are spades, so 52/4= 13 spades.
When added, the numerator of the probability is 25, however, because the Jack, Queen, and King of Spades are duplicated, we have to subtract 3.
25-3=22
22/55
when simplified: 2/5