Which book citations are formatted correctly? Check all that apply.

Harwood, Ronald. Mandela, New York: New American Library, 1987. Print

Brookes, Edgar Harry. Apartheid. Barnes & Noble, Print. New York: 1968.

Maltz, Leora. Nelson Mandela. San Diego: Greenhaven, 2004. Print.

Keller, Bill. Boston: Kingfisher, 2008. Tree Shaker: The Story of Nelson Mandela. Print.

South Africa. Evans, Michael. New York: Gloucester, 1988. Print.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?