Given -2ab, under what conditions would the solution be positive? justify your answer by showing numerical examples.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)