Could someone help me with this? Im lost
1 answer:
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One way you could solve this is to just multiply the top and bottom out so that you get 9/81, reducing it by 9/9 to get 1/9 or option C.
Another way would be to do
since dividing numbers with exponents would be subtracting the bottom exponent from the top exponent, provided that the base number (in this case 3) is the same for both. For this method, you would get 
, which is equal to 1/9 or .1 repeating, the same answer that you'd get with the first method.
Another way would be to do
Since the triangles are similar, then 32 = x+7 those two angles are too
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now using proportions
solve for JK
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the scale factor of the perimeter of both triangles is just the same as the ratio of the sides, or
solve for "x"
now using proportions
solve for JK
solve for KG
the scale factor of the perimeter of both triangles is just the same as the ratio of the sides, or