Wesley is making a patio from stones of two sizes 5 inches wide and 10 inches wide. he wants to begin and end his pattern with a 10 inch stone so there will be one more 10 inch stone than of the 5 inch stones. his patio will be 175 inches wide. how many 10 inch stones will he need for one row?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

How do newtons third law of motion demonstrates on a rollar coster

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.