For the following quadratic equation, find the discriminant. x^2+11x-48=3x

From quadratic standard form ax^2+bx+c

Ngrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. she divides the trail mix into 12 equal portions. each portion weighs 0.7 pound. how many pounds of raisins did she use to make the trail mix? express the answer to the nearest tenth.

Simplify the expression. -2/5(10+15m-20n)

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction