What is the approximate circumference of a circle with a diameter of 40 inches? (careful you need radius so 40/2)(use π = 3.14)(c= 2 *π*r) (a.) 125.6 in.(b.) 63 in.(c.) 251 in.

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

What is [tex] {7}^{98 + \sqrt{4} } - 3 \times (64 \div 2 + 4 - 36) \times a = a + 36[/tex]?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.