69/100 kilometers
you want to make the denominator for both numbers and to do that you would multiply 5/10 by 10 and you would get 50/100 and 50/100+19/100 which equals 69/100
50 x 5280 = 264,000 feet in 50 miles
60 x 60 = 3600 seconds per hour
264000/3600 = 73.33 rounded to 73 feet per second
34 + 37 is a simplified version of the previous question
Your answer is B. because area= length × width.
Well
i=√-1 so
i^2=(√-1)^2=-1
remember that
x^(mn)=(x^n)^m
i^40=(i^2)^20
we know that i^2=-1 so
i^40=-1^20
-1^2=1
-1^3=-1
-1^4=1
-1^5=-1
we conclude that even powers of -1 yeild +1 so the answer is +1 (positive 1)