Answer:
Ok im, not 100% sure but the answer is for 1-10, 2-20, 3-40, 4-40
9 and 1/3 because you add what she has and what she's given and subtract what she uses. You must use a common denominator. Hope this helped you!
5d=750
750/5=150
150(miles) x 5 (days) = 750(total miles)
Answer:
0.78
Step-by-step explanation:
We have the next probability distribution:
X P(X)
0 0.2
1 0.3
2 0.5
As we can see when we add all the probabilites the result is 1. Now calculating the mean we have:
The standard deviation is:
Then using the data that we have:
Then the standard deviation is 0.78