Answer:
Variance = 24900
Standard Deviation = 157.7973
Step-by-step explanation:
We are given the following in the question:
Number of admissions: 1000 1200 1500
Admissions Probability: 0.6 0.3 0.1
Formula:

Variance =

Thus, the variance is 24900.
Standard Deviation =

Thus, the standard deviation is 157.7973
Answer:
4+4+4=12
Step-by-step explanation:
Each cake needs cups of flour.
Therefore, the best estimate of the number of cups of flour that Nika used to make the three loaves is:
4 + 4 + 4 = 12
Answer:
£08.22
Step-by-step explanation:
6*1.37=8.22
Answer:

Step-by-step explanation:
Let x be the cost of a coat and y be the cost of the shoes.
We have been given that Taka bought a new coat and new shoes, so the cost of new coat and shoes will be x+y.
We are also told that Taka spent $122 on both items. As Taka had spend $122, so the cost of coat and shoes will be greater than or equal to 122.
We can represent this information in an inequality as:

Therefore, the inequality
represents our desired solution.
Answer:
1,2,3, and 5
Step-by-step explanation:
I plugged them all into a calculator