Ineed with calculating area of this triangle using only pythagorean theorem. i've calculated some partial sides using data provided, but i'm unable to continue without the use of trigonometry. i've also tried transforming the triangle into parallelograms and such. any ideas?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i