100 points! graph each function by addition of ordinates, i dont need you to graph i only need to find the key angles and points. y = 2x^2 + x - 1

X-intercepts: 0.5 and -1

Vertex - (-1/4, -9/8)

Step-by-step explanation:

Using factoring, we can get (2x-1) (x+1)

This gives us x-intercepts, .5 and -1

Vertex -

-b/2a

-1/4

Plug this into the equation and get -

(-1/4, -9/8)

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

with btw u said 100pts but it clearly says

i answerd and just got 10pts

no hate