Distance covered by an elevator = 310 feet.
Time taken to cover 310 feet = 10 seconds.
The rate of the elevator at its run = 310/10 = 31 feet per seconds.
We're trying to find at how many feet an elevator can travel in 12 seconds.
In order to find the distance covered by an elevator in 12 seconds, we need to multiply 12 by the rate of the elevator.
<em>Thus, distance covered by the elevator in 12 seconds = 12 × 31 </em>
= 372 feet.
Answer:
The radioactive isotope content of a rock can be used to identify the rocks age.
Answer:
Precambrian. Precambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago.
Explanation:
. stop littering and throwing garbage in the water.
. oil tankers should be moved around carefully so that there are no oil spills.
. soluble ingredients, such as salt, should not be disposed off into fresh river streams.
Edit: Brazil is the correct answer