Which equation has roots of 3±√2

?

A

x2−4x+1=0

B

x2−18=0

C

x2+6x+7=0

D

x2−6x+7=0

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup