What is the exact distance from (−4, −2) to (4, 6)?

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

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

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1