Answer:
4.19
Step-by-step explanation:
Find the mean:

Find the standard deviation:

Answer:
can you plzz write the full question
ANSWER
The correct choice is C.
EXPLANATION
The perimeter of a rectangle is given by;
P=2(w+l)
For the first rectangle, the perimeter is;
P=2(8+4)=24
For the second rectangle, the perimeter is
P=2(8+8)=32
For the third rectangle, the perimeter is
P=2(8+12)=40
The correct choice is C
Answer:
He spend on bus fares £7.50