The sum of squares of 10 terms is 38500, variance is 825, then coefficient of standard deviation is a) 0.24 b) 0.25
c) 0.42
d) 0.52
And explain it.

Which linear equations have an infinite number of solutions? check all that apply.  (x  –  3/7)  =  2/7(3/2x  –  9/14)8(x  +  2)  =  5x  –  1412.3x  –  18  =  3(–6  +  4.1x)(6x  +  10)  =  7(x  –  2)4.2x  –  3.5  =  2.1 (5x  +  8)

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?