multiply each heart rate by 24 (hours in a day)
subtract the human's daily heart rate from the elephant's.
30 x 24 = 720
70 x 24 = 1680
1680 - 720 = 960
the answer is:
50% of the number is 87.5
hello from mrbilldoesmath!
the attachment shows a right triangle where arcsin(@) = 1/4. (the arcsin means find the angle whose sine is 1/4 as is done in the triangle.) the missing side, sqrt(15), shown in red, was determined by the pythagorean theorem.
then cos(@) = cos(arcsin(1/4)) = sqrt(15)/4
when at rest an elephants heart rate is about 30 beats per min and a h...