What is the measure of angle B?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

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

There is a linear relationship between a salesperson sales and her weekly income. if her sales are $200 her income is $500 and if her sales are 1,200 her income is $600.what is the relationship between sales and income