Which ordered pairs in the form (x, y) are solutions to the equation

7x−5y=28 ?

select each correct answer.

(7, 9)

(4, 10)

(−1, −7)

(−6, −14)

The third option. (-1, -7)

the answer is simply just 6n add the two together as they have an n

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+

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