Answer:
40
Step-by-step explanation:
If w = xyz then it will be:
<em>22</em><em> </em><em>+</em><em> </em><em>12</em><em> </em><em>+</em><em> </em><em>6</em><em> </em><em>=</em><em> </em><em>40</em>
The youngest her cousin can be is 4.
4(3)=12
12-2=10
10+4=14
First, we can start by expanding (a+b)²
a²+2ab+b²
We can then use the commutative property to separate this into:
a²+b² + 2ab
Since we are given the values for <span>a²+b² and ab, we can</span> plug in these values into the equation:
16 + (2)(8)
16+16
32
Therefore, the value of (a+b)² is 32
Answer:
The mean of the number of restaurants that failed within a year is 28.38 and the standard deviation is 4.02.
Step-by-step explanation:
For each restaurant, there are only two possible outcomes. Either it fails during the first year, or it does not. The probability of a restaurant failling during the first year is independent of other restaurants. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
The expected value of the binomial distribution is:
The standard deviation of the binomial distribution is:
In the city where she lives, the probability that an independent restaurant will fail in the first year is 43 %.
This means that
66 independent restaurants
This means that
Mean:
Standard deviation:
The mean of the number of restaurants that failed within a year is 28.38 and the standard deviation is 4.02.