Solve by using cramers rule : 3x +2y = 1 , x-y = 2​

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school. each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?