Before the eruption of a volcano, the volcano was 2.75 kilometers high. After the eruption, the volcano was 2.25 kilometers hi gh. Find the difference in height of the volcano before and after the eruption, in meters.
1 answer:
Before the eruption the vulcano was 2.75 km high, what is equal to (2,75x1000) 2750 m. After the eruption it was 2250 meters high. The difference would then be 2750-2250= 500 meters.
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Answer:
Step-by-step explanation:
14 = 1000
.014 =
ln(.014) = k ln(e)
k = -4.268
~~~~~~~~~~~~~~~~~~
after 3 hrs
1000
0.00274
~~~~~~~~~~~~~~~
4 = 1000
.004 =
ln(.004)/-4.268 = t
t = 1.29368 hrs
Answer:
(x-5) (x+4)
Step-by-step explanation:
x^2 -x -20
What two terms multiply to -20 and add to -1
-5*4 = -20
-5+4 = -1
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