The power 9^2 is equivalent to 81. What is the value of 9^2? A) -81
B) -9
C) 1/81
D) 1/9

I guess it would be -9

Step-by-step explanation:

Since a negative times a negative is positive... ig thats your answer.

C 1/81

Step-by-step explanation:

9x9 is 81 same as 9 to the power of 2

geometry: triangles

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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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