Abby did 121 sit ups in 8 minutes estimate the number of sit ups she did in 1 minute

If the value of cos330°is√3/2 then find cos 165°.

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.