If y=2cos (x/2) then d^2y/dx^2 =

Kate paid $27 for a dress that was on sale for 10% off. What was the original price of this dress?

What is 2.006 in expended form

Determine whether the given procedure results in a binomial distribution. If it is not binomial, identify the requirements that are not satisfied. Surveying 20 college students and recording their favorite TV show

How do I show the work of twenty plus x plus forty five plus ninety

On average, a dolphin swims at a speed of 8 km per hour for about 15 hours per day. What distance does a dolphin travel per day?

Is - 2 pi rational or irrational

A rose garden is formed by joining a rectangle and a semicircle, as shown below. the rectangle is 27ft long and 18ft wide. find the area of the garden. use the value 3.14 for π, and do not round your answer.

The cost is 8.50 an hr. for 1 hr. 13.65 for 2 hrs. 18.80 for 3 hrs. and 23.95 for 4 hrs. if the pattern continues how much will it cost for 6 hrs?

Jimmy measured four pieces of wood. their measures are 4.2 ft, 9/2 ft, 4.02 ft, and 4 2/9 ft. what's the length of the shortest piece

A population of 1236000 grows 1.3%per year. Find the population after 10 years