The displacement of a particle on a vibrating string is given by the equation s(t) = 9 + 1 2 sin(9πt) where s is measured in centimeters and t in seconds. Find the velocity (in cm/s) of the particle after t seconds. v(t) = cm/s

Adriveway is 60-feet long by 6-feet wide. the length and width of the driveway will each be increased by the same number of feet. the following expression represents the perimeter of the larger driveway: (x + 60) + (x + 6) + (x + 60) + (x + 6) which expression is equivalent to the expression for the perimeter of the larger driveway? a) 2(x + 66) b) 4x + 33 c) 4(x + 33) d) 4(x + 132)

Arandom number generator is used to model the patterns of animals in the wild this type of study is called

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?