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Given cosx= 4/5 when (3π/2) < x<2π find sin2x

A. 18/24

B -18/25

C.-1/5

D. -24/25

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

What expression is equivalent to 1/2(2+3x-6)

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.