Simplify. Write your answer in standard form.

(4x3+6x−7)+(3x3−5x2−5x+9)

John bought 5 lemons and used 2 of them for a salad how much did he use for. a salad . he used % of the lemons.

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.