What is the mean for the following numbers: 8,2,5,5,4,2,2?

4

Step-by-step explanation:

The mean is the average.

1. Add up all the numbers

8+2+5+5+4+2+2= 28

2. Divide by the total numbers you have

28/7= 4

4

Step-by-step explanation: 4 is the answer because to find the mean of a set of numbers first, you have to add all the numers up and then divide by how many numbers there are in the set.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4