Which expression represents the product or x3+2x-1 and x4 - x3+3?
1 answer:
Answer:
4th option
Step-by-step explanation:
(x³ + 2x - 1)( - x³ + 3)
Each term in the second factor is multiplied by each term in the first factor, that is
x³( - x³ + 3) + 2x(
- x³ + 3) - 1 (
- x³ + 3) ← distribute parenthesis
= -
+ 3x³ + 2
- 2
+ 6x -
+ x³ - 3 ← collect like terms
= -
+ 2
- 3
+ 4x³ + 6x - 3
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Answer:
$5000*0.816 = $4082
Step-by-step explanation:
It's a strange question, but based on the statement and the question it sounds like it's a poisson distribution:
* For 3 days she was able to get 2 good shots (<em>typical of that time of the year</em>)
* Good shots happen randomly
* Each day is independent of another
Let's call 'p' the probability that she makes a good shot per day
Let's call 'n' the number of days Karen is taking shots.
So, if in 3 days he got 2 good shots and that is typical at that time of the year, then the expected value for the number of good shots (X) is:
For a Poisson distribution
So:
For a Poisson distribution the standard deviation is:
this is the standard deviation for the number of buentas taken.
So the standard deviation for income is the price of each shot per sigma
$5000*0.816 = $4082, which is the desired response.