If the foot length of women follows a normal distribution with a mean of 23 cm, and

81.5% have a foot length between 20 cm and 29 cm, what is your estimate of the standard

deviation of the heights in this population?

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

Asystem of linear equations contains two equations with the same slope. select all of the correct statements. i a. the system may have two solutions. - b. the system may have infinitely many solutions. c. the system may have one solution. o d. the system may have no solution. submit

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x