It took him 90,760 milliseconds to finish the race track.
The race was 100,000 centimeters long.
Step-by-step explanation:
Given,
Length of racetrack = 1000 m
Time taken to cover the length = 90.76 seconds
How many milliseconds did it take him to finish the race?
1 second = 1000 milliseconds
90.76 seconds = 90.76 * 1000 = 90760 milliseconds
It took him 90,760 milliseconds to finish the race track.
How many centimeters long was the race?
1 meter = 100 centimeters
1000 meter = 100*1000 = 100000 centimeters
The race was 100,000 centimeters long.
Keywords: multiplication
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Answer:
243
Step-by-step explanation:
you see its math.
z= r(cosθ+i sinθ) is the required polar form where, r = √41 and θ =π- 
Step-by-step explanation:
Given,
-4+5i is a complex number.
To find the polar form.
Formula
z=x+iy
r² = mod of (x²+y²)
θ = 
So, the polar form will be z=r(cosθ+i sinθ)
Now,
r² =(-4)²+5² = 41
or, r = √41
θ =π- [ since the point is in second quadrant]
Hence,
z= r(cosθ+i sinθ) is the required polar form where, r = √41 and θ =π-
