Sonji plots –9 on a number line to represent the depth of her sailboat underwater and labels it b. she plots positive 20 on the same number line to represent the height of her sailboat above water and labels it a. sonji asks if b, the elevation below sea level, acts as an opposite to a, the elevation above sea level. what is the best answer to her question?

Factor this polynomial completely x^2-64

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?