Use the integers that are closest to the number in the middle. √57

Evaluate cos2θ for cosθ = square root of 3/2

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)