When the catenary ye=a cosh (x/a) is revolved around the x-axis, it sweeps out a surface of revolution called a catenoid. find the area of the surface generated when y= cosh x on [−ln15,ln15] is rotated around the x-axis.

Simplify the expression. enter the correct answer.

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.