Michael is 57 years old and is recovering from a stroke. His doctor told him he can only exercise within 35%-55% of his max heart rate. What is Michael’s Target Heart Rate?

answer: yes youre right.

step-by-step explanation:

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

19479 is the answer ^^

a king of hearts and a 2 of spades