Please help need quickly!

Sketch a right triangle, with hypotenuse = 425. Solve for y, the side opposite the 47-degree angle, using the sine function.
Sin 47 = opp / hyp

Sin 47 = y / 425

Y= 425 times (Sin 47)

Y= 425 times () [evaluate Sin 47]

The correct answer for the question that is being presented above is this one: "5(3x2 – 8x + 5)." The expression 40x2 – 65x + 50 represents the sum of the interior angles of a regular pentagon in degrees. If the interior angles of the pentagon are equal, then the expression the represents the measure of two angles is this 5(3x2 – 8x + 5)