52 /(-4)= -13 so the answer is 52
Answer:
Step-by-step explanation:
In a deck of 52 cards there are 4 aces.
Therefore the probability of obtaining an ace is:
P (x) = 4/52
The probability of not getting an ace is:
P ('x) = 1-4 / 52
P ('x) = 48/52
In this problem the number of aces obtained when extracting cards from the deck is a discrete random variable.
For a discrete random variable V, the expected value is defined as:
Where V is the value that the random variable can take and P (V) is the probability that it takes that value.
We have the following equation for the expected value:
In this problem the variable V can take the value V = 9 if an ace of the deck is obtained, with probability of 4/52, and can take the value V = -1 if an ace of the deck is not obtained, with a probability of 48 / 52
Answer:
x^2+5x+13=0
Step-by-step explanation:
x upper 2 and 5x
Answer:
B) 6+6+33+44+55
Step-by-step explanation:
We assume your prism has bases that are 3-4-5 triangles, and that it is of length 11. The the surface area is the sum of the areas of the bases and the areas of each of the rectangular sides.
base area = (1/2)(3)(4) = 6
face area = (3)(11) +(4)(11) +(5)(11) = 33 +44 +55
Surface area = base area + base area + face area
Surface area = 6 + 6 + 33 + 44 + 55
To find the percentage, you can multiply (34/80) by (100/1) to obtain the percentage. (This applies for all fractions)
In this case, you will get 3400/80 = 42.5%
Hope this helps!
