Volunteers for an experiment are numbered 1 to 70. the volunteers are to be randomly assigned to two different treatment groups. use a random number generator to choose 35 subjects for the treatment group. the other 35 subjects will go into the control group. list the subjects, according to number, in each group. seed your calculator to 8

Solve the system of equations. y= 2x y= x^2 - 15

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

What dimensions can créate more than one triangle ?