Solve the following system.
x^2/25+y^2/100 = 1
a {(3, 4), (-3, 4)}
b {(4, 3), (-4, 3)}
c {(0, -10), (0, 10)}
d {(-5, 0), (5, 0)}

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

We just started the introduction into circles and i have no idea how to do this.