Find the vertex of this function and decide if it is a maximum or a minimum point.

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality