Х -7, -3, -5, 3, 9, 16, 20 y=f(x) 3, 4, 5, 1, 8, 7, 11
The table shown at the right gives y as a function of x, that is, y = f(x). Use the table to answer parts a through d below.
a. Is - 7 an input or an output of this function?
b. Is f(-7) an input or an output of this function?
c. State the domain and range of this function.
d. Explain why this relationship describes y as a function of x.

answer: 20

step-by-step explanation:

answer: -1

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584