Find sin θ/2 when 270º< θ< 360º and cosθ is defined as:

cosθ = √7/4

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Julia bought 7 hats a week later half of all her hats were destroyed in a fire. there are now only 12 hats left with how many did she start