Answer:
Step-by-step explanation:
Given Equation:
Actually the given equation is the 2nd equation of motion
i.e. 
where 
because the astronaut jumps on the earth
and initial velocity 
to find time 
, put the given value of 
in the given equation, we get
it will take to reach the ground if he jumps on the Earth
The answers are:
P(9, 2) = 72
P(5, 5) = 120
P(7, 7) = 5040
These are examples of permutations. The problems are asking us to find the total number of ways an event can happen.
In the first case, P(9, 2), we are asked to find the ways that 2 things can be chosen out of a group of 9.
9 x 8 = 72
P(5, 5) = 5 x 4 x 3 x 2 x 1
P(7, 7) = 7 x 6 x 5 x 4 x 3 x 2 x 1
4×10^6 you subract the exponents when dividing and divide the number multiplying the 10
Answer: 140
Step-by-step explanation:
n calculate
|-11| > |-10|
this is because the absolute value is always a positive number. therefore, it is really 11 > 10.
