Shota is a dangerous fellow who likes to go rock climbing in active volcanoes. One time, when he was 30 meters below the edge of
2 answers:
Answer:His rate of climbing = 5 meter /second and total time to reach the edge of volcano = 6 second
Step-by-step explanation:
Here, According to the question,
The total distance he would cover= 30 meter.
The distance covered by him in 4.5 second = 30 - 7.5= 22.5 meter.
Thus, his speed = = 5 m/s ( because speed = distance/ time)
Since, the remaining distance he has to cover= 7.5 meter
So, the time taken by him to cover the distance= 7.5/5= 1.5 seconds
Therefore the total time taken to cover the distance of 30 meter,
T= 4.5 + 1.5 = 6 second.
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Answer:
Step-by-step explanation:
Multiply out in order to find out which expression it is equivalent to.
1) Since the whole quantity is squared, write it out as .
2) Multiply binomials by using the FOIL method. Multiply the terms that are listed first in each binomial, then the ones that are listed outermost when looking at both binomials, then innermost, and finally the last terms listed in each binomial. Simplify and combine like terms.
3) , so
must be
. Thus,
is equivalent to -1. Knowing this, simplify and combine like terms.
Thus, it is equivalent to .