When a grizzly bear hibernates, its heart rate drops to 10 beats per minute, which is 20% of its normal value.
What is a grizzly bears normal heart rate when not hibernating

50 beats per minute

Step-by-step explanation: 20% * 5 = 100%   10 * 5 = 50 beats per minute.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

many reason,

step-by-step explanation: