Simplify: (2x2 − 9x + 3) + (−7x2 + 4x − 2)
a.−5x2 − 13x + 1
b.−5x2 + 5x − 1
c.9x2 − 4x + 1
d.−5x2 − 5x + 1

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

Which of the following shows the length of the third side, in inches, of the triangle below

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.