Rewrite the following equation in the center-radius form of the equation of a circle.
x2 - 6x + y2 - 8y + 21 = 0

A.
(x - 5)2 + (y - 3)2 = 4
B.
(x - 6)2 + (y - 8)2 = 4
C.
(x - 3)2 + (y - 4)2 = 4
D.
(x - 4)2 + (y - 6)2 = 4

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml

Drag each expression to the correct location on the solution. not all expressions will be used. consider the polynomial 8x + 2x2 - 20x - 5. factor by grouping to write the polynomial in factored form.

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no