Answer:
Step-by-step explanation:
1. The mean is calculated using below table
<u>Marks Frequencies Midpoint Product</u>
10 to 14 18 12 216
15 to 19 9 17 153
20 to 24 11 22 242
25 to 29 25 27 675
30 to 34 14 32 448
<u>35 to 39 3 37 111 </u>
Sum 80 1845
<u>The mean is:</u>
2. The mode is the midpoint of the tallest bar.
<u>The mode is </u>
3. The median is the middle of the data set. The number of frequencies is 80, the middle frequency is number 40, which is within the 25 to 29 bar.
<u>Formula to calculate median:</u>
where
<u>Substitute values and calculate:</u>
Answer:
Step-by-step explanation:
As a result of the pythagorean theorem we can say that a^2+b^2=c^2
In this case, we have bc and ab missing side ac. So the equation looks something like this
dont get confused by the ac in the problem i only wrote it like that because ac is the length representation. So 16+ac^2=121 and with algebra we can solve to ac^2=105 or side ac=
