In a farm ,ratio of number of cows to the number of hens is 2:3.if number of legs is 40 more than the number of eyes ,total how many hens are there

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?