Solve for x in the equation 3x^2-18+5=47

Step-by-step explanation:

Try to leave x alone on the left side

To leave alone x, add +13 to both sides. Because left side has -13

Now x is alone on the  left side

So; x=

Hope this helps ^-^

geometry: triangles

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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

i would say b) is your answer

sorry if im wrong

step-by-step explanation: