20 points due in a hour : ( show how you got the answer tomas asked 15 students whether summer break should be longer. he used his calulator to divide the number of student who said yes to the total number of students. his calculator showed result as 0. a. write this number as a fraction. b. how many students said that summer break should be longer?

Solve the system of equations. y= 2x y= x^2 - 15

25 ! i need asap! ! ill mark brainliest!

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