Which expression is equal to sin 75°?
o sin 135º cos 60° - cos 135º sin 60°
o cos 135º cos 60° + sin 135º sin 60°
e sin 135º cos 60° + cos 135º sin 60°
cos 135º cos 60° – cos 135º cos 60'

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?