There are no marks to conclude that the sides of the triangle are congruent, it doesn't mean they're not, it just means there is a chance that the side-side-side is out. I am not sure if the AB=C is referring to the angles A, B and C, or if it referring to line segment AB.
Answer:
The correct answer would be 5/9.
Step-by-step explanation:
Convert 1/3 into 3/9.
Add 2/9 and 3/9 to get 5/9.
Answer:
The cumulative frequency plot is also attached below.
Step-by-step explanation:
The data provided is as follows:
Age Group Frequency
0 - 9 34.9
10 - 19 35.7
20 - 29 36.8
30 - 39 38.1
40 - 49 37.8
50 - 59 37.8
60 - 69 34.5
70 - 79 27.2
80 - 89 18.8
90 - 99 7.7
100 - 109 1.7
Consider the Excel output attached.
The cumulative frequency are computed in the Excel sheet.
The cumulative frequency plot is also attached below.
From the cumulative frequency plot it can be seen that in the future most people will belong to a higher age group rather then the lower ones.