9. The data set below gives the scores of seven people on a history test. Which correctly gives the standard deviation and variance of the data set? {74, 78, 83, 89, 90, 92, 96} A. Standard Deviation = 53.2; Variance = 7.3
B. Standard Deviation = 53.2; Variance = 86
C. Standard Deviation = 7.3; Variance 53.2
D. Standard Deviation = 86; Variance = 53.2​

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Which equation represents h for right triangle abc