The mean is the average. You calculate it by adding all the numbers up in the data set and divide by how many numbers there are in the data set.
So:
Step-by-step explanation:
using Pythagoras a²+b²=c²
HOWEVER you know the hypotenuse
so it's rearranged to either c²-b²=a² or c²-a²=b²
so 13²-11²
so 169-121
this makes 48
square root 48 is 6.90 inches
this rounds up to <u>7</u><u> </u><u>Inches</u>
Answer:
Its E c;
Step-by-step explanation: