The area of a trapezium is 400 cm2. The sides and height are in terms of x.
Find the height of the trapezium.
13.x cm
5xcm
17x cm 10x cm-

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

Find the unit rate. enter your answer as a mixed number. a fertilizer covers 2/3 square foot in 1/2 hour.