Answer: D
Step-by-step explanation:
By De Moivre's theorem, the argument will be 120 degrees, which is the same as the argument of .
This isn't the case for the other 3 options.
Answer:
37.7
Step-by-step explanation:
Area=cirumference.
to find circumference you will do 6*2 to get the diameter.
multiply that by 3.14
We could do it with algebra. But we can also do it the long way, which is
shorter than the algebraic way.
The digit in the tens place is 3 times the digit in the units place.
So the number MUST be
31, or
62, or
93 .
It can't be anything else.
Now here they are again, with the reverse of each one:
31 . . . 13 The new number is 18 less.
62 . . . 26 The new number is 36 less.
93 . . . 39 The new number is 54 less.
Obviously, the original number is 62.
Try using
Wolframalpha.com
It can solve any mathematical problem
Answer:
12:7
Step-by-step explanation: