On a field trip there are 30 kids and 6 adults. Which of the following is a correct way to represent the ratio of these two quantities? A) 5 kids per 1 adult
B)15 kids per 4 adults
C)1 adult per 5 kids
D)2 adults per 10 kids
This is for a TEST so can u show the work

Evaluate cos2θ for cosθ = square root of 3/2

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

X+y=-4 x-y=2 use elimination with adding and subtraction