Answer:
40 = d+q
7.15=0.10d+0.25q
there are 19 dimes and 21 quarters.
sin22°
Step-by-step explanation:
Using the cofunction identity
cos x = sin (90 - x), then
cos68° = sin(90 - 68)° = sin22°
I think it's A and C
reflection from the x-axis