Falling at the rate of 2.5 m/s for 45 seconds, the anchor fell
(2.5 m/s) x (45 s) = 112.5 meters .
If it wound up only 40 meters underwater, then it must have fallen
(112.5 m - 40 m) = 72.5 meters
from its storage position on the big cruise ship,
before it ever reached the water.
Since it was falling at the rate of 2.5 m/s, it took
(72.5 m) / (2.5 m/s) = 29 seconds
to get down to the water surface after it started dropping.
To solve this, you multiple 10×.08=.80, so .80 is the answer.
H(t) = -16t^2 + vt + s
0 = -16t^2 + 100t + 140
4t^2 - 25t - 35 = 0
t = 7 seconds.
Answer:
-4
Step-by-step explanation:
Is is actually quite easy if you think about it! The formula for finding the area of a circle is:
Area= pi x r2
Or in this case, Pi (3.14) x the radius squared.
In the picture above, the radius (Half of the diameter) is 3 units.
3x3 = 9
Now all that is left is to multiply it by pi!
9 x 3.14 = 28.26
So the answer is 28.26, or C! Hope this helped :)!