Answer: 
<u>Step-by-step explanation:</u>
First pick and Second pick = Probability
Simplify:
To solve this first we have to find out how many seconds are in 15 minutes.
So, 15 x 60 since there is 60 seconds in a minute, and of course there are 15 minutes.
15 x 60 = 900 seconds.
Now we need to find out about how many seconds does it take George to blink once. So we divide 900 seconds by 85 blinks.
900 / 85 = About 11 seconds for one blink.
Now we use the rate of 1 blink = 11 seconds and multiply. Since they said 51 blinks you would multiply 51 blinks by 11 seconds.
51 x 11 = About 561 seconds.
Answer: About 561 seconds passed in 51 blinks.
The answer to the problem is B.
Answer:
time = 2.48 seconds
Step-by-step explanation:
Given data:
distance = 100 foot
Initial velocity = 0 <em>because it was held and being released.</em>
acceleration is gravitational force
<em>gravitational force in feet per second = 32.2 ft/s²</em>
<em>formula for distance is s = ut +(1/2)at² where s = distance , u = intial velocity , a = acceleration and t = time</em>
s = ut +(1/2)at²
100 = 0(t) + (1/2)(32.2)t²
100 = 16.2t²
100/16.2 = t²
therefore t = 2.484
t = 2.48 seconds (to 2 decimal places)
