Asap! which of the following ratios forms a proportion with 4/15? a: 8/20 b: 7/18 c: 12/45 d: 6/25

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Identify the number as a rational or irrational.explain. 127