A certain circle can be represented by the following equation.
x2 + y2 - 18x + 20y + 177 = 0
What is the center of this circle ?
What is the radius of this circle ?
units

2nd one in the first row is correct

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

69.64%

step-by-step explanation: