Question

Can someone see if they know the answer to these:

http://screensnapr.com/e/WKs9oB.png Can someone see if they know the answer to these:

http://screensnapr.com/e/WKs9oB.png @Mathematics

Answer 1

a both times i think

Answer 2

The first one you just need to find the average x and y values: (-3+2)/2 for the x and (-8+5)/2 for the y.
(-1/2,-3/2)

Answer 3

The second one is an extension of pythag. thmn. √[(2-1)^2+(-3-4)^2] = √(1+49) = √50 = 5√2