8. Michele measured her resting pulse rate by counting her number of heartbeats for a duration of one minute. She recorded the number of heartbeats every 10
seconds in the table below.
Heartbeats
Time
(seconds)
10
11
20
22
30
33
40
44
50
55
60
66
Which function represents Michele's number of heartbeats after t seconds?

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+

25.45584

a

step-by-step explanation: