Answer:
5
Step-by-step explanation:
x^2 - 10x + 16 = 0
factor
(x - 2)(x - 8) = 0
roots
x = {2, 8}
mean of roots
a = (2 + 8) /2
a = 5
Answer:
9
Step-by-step explanation:
You have to read your givens carefully and then get rid of the information you don't need.
The key fact is that CM = 3
The centroid divides the median into a one to two ratio. So
1/2 = CM/DM where D is apex of the triangle. It is where two of the sides meet, plus the median going to C.
1/2 = 3/DM Cross multiply
DM = 2 * 3
DM = 6
Therefore the length of the median going to C is DM + CM = 6 +3 =9
Answer: I think 19.5 is the median
Step-by-step explanation:
Answer:E
Step-by-step explanation:
The margin of error of 1.5 years indicates that we are confident the population mean age is captured i. The interval 26-1.5=24.5 to 26+1.5=27.5 years old. Therefore, it is plausible that the average age of first time mothers is 27 years old.
