4. Which equation is an identity?

A. 5y + 5 = 5y – 6

B. 8 – (6v + 7) = –6v – 1

C. 3w + 8 – w = 4w – 2(w – 4)

D. 6m – 6 = 7m + 9 – m

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

The weight of a full steel bead tire is approximately 800 grams, while a fighter wheel weighs only 700 grams. what is the weight of each tire in pounds?

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean