What equals 69 in multiplication

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys