Me with this question: ted writes the following equation, write the number the makes the equation correct

i think the answer is 800 but this is a fraction sheet i'm on working on it don't know what to do it might be a trick question

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet