10. Identify the following is Rational
or Irrational.
(2 + √2)²
Answers
Answer:
Question :-
A vulture takes 50 seconds to travel a distance of 1.5 km. What is the speed of the vulture?
Answer :-
Speed of a vulture is 30 m/s.
Explanation :-
Given :-
Distance travelled = 1.5 km
Time taken = 50 seconds
To Find :-
Speed of a vulture?
Solution :-
❏ Converting units of distance into meters :-
We know that,
✪ 1 km = 1000 m ✪
Therefore,
↪ Distance in m = (1.5 × 1000) m
➢ Distance in m = 1500 m
Now, we have distance travelled by vulture as well as time taken by vulture. So, we can easily find speed by using formula of speed.
We know that,
✪ \bf Speed = \dfrac{Distance}{Time}Speed=
Time
Distance
✪
Putting values in formula we get,
⇒ \sf Speed = \dfrac{150\cancel{0}}{5\cancel{0}}Speed=
5
0
150
0
⇒ \sf Speed = {\cancel{\dfrac{150}{5}}}Speed=
5
150
➠ \bf\red{Speed = 30\:m/s}Speed=30m/s
∴ Speed of a vulture is 30 m/s.
Learn more on brainly :-
★ Question :-
A bike is travelling at a uniform speed of 90 km/h. Calculate the distance cover in 5 second?
★ Answer :-
brainly.in/question/43496630
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Answer:
irrational
Step-by-step explanation:
(2+√2)^2= (2)^2+(√2)^2+2(2√2)
=4+2+4√2
=6+4√2
as we know√2 is irrational, so
(rational+irrational)=irrational
so, given is irrational