Write an equation for the line , given that m=3 and the y-intercept is (0,2).
1 answer:
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Answer:
Step-by-step explanation:
We know that:
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
Therefore, expected value for V, the number of points obtained in the game is:
So:
Answer:
x1 = 0, x2 = -7
Step-by-step explanation:
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Step-by-step explanation:
Let AB be 5cm
AC be 13cm
According to Pyathagros therom
AC²=AB²+BC²
13²=5²+BC²
169=25+BC²
BC²=169-25
BC²=144
BC=√144
BC=12cm
Area of ∆ABC=½×base×hight
=½×12×5
=½×60
=30cm²
Parimeter of ∆ABC=a+b+c
=5+12+13
=30cm
