Write an algebraic expression for the product of 5 and the sum of a and b. freshman algebra

Acircle has a circumference of 28.36 units what is the diameter of the circle

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

Hormones perform important functions within the reproductive system. during puberty, a number of changes occur in the body. which hormone is responsible for the development of these characteristics in the female? estrogen progestin progesterone testosterone