Which best describes this quadrilateral?
a.
all angles are acute.

b.
all sides are the same length.

c.
all sides are different lengths.

d.
all angles have the same measure.

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

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.