6+4• (5-7)^2
(5-7)^2
-2^2
4
6+4+4
=14
Answer:
30 in.
Step-by-step explanation:
You have to add the current length of the board with the length that was cut off.
18 + 12 = 30
Using the mean concept, it is found that on average, it takes him 11.9 seconds to run a 100 yard dash.
<h3>What is the mean?</h3>
The mean of a data-set is given by the <u>sum of all observations in the data-set divided by the number of observations</u>.
In this problem, the three observations are given by:
12.7 s, 11.2 s, 11.8 s.
Hence the mean is:
M = (12.7 + 11.2 + 11.8)/3 = 11.9.
On average, it takes him 11.9 seconds to run a 100 yard dash.
More can be learned about the mean of a data-set at brainly.com/question/24628525
#SPJ1
Answer:
a=4
b=0.5p
c=py
Step-by-step explanation:
a) 8*0.5= 4
b) p*0.5= 0.5p
c) p*y= py
Hope this helps! :)
