Converting 1 hour and 15 minutes to minutes only, its 75 minutes. 75 - 54 is 21. So, Martin has 21 minutes left to finish.
The first graph is the answer
To multiply complex numbers in polar form: multiply the r parts and add the angle parts. Or
<span><span>r1</span><span>(cos <span>θ1 </span>+ i sin <span>θ1</span>)</span></span> <span>× <span>r2</span><span>(cos <span>θ2 </span>+ i sin <span>θ2</span>)</span></span>
= r1r2(cos(θ1+θ2) + i sin(θ1+θ2))
so zw
=3*8(cos(π/9+π/12) + i sin(π/9+π/12))
=24(cos(7/36)π + i sin(7/35)π)
Answer:
64
Step-by-step explanation:
There are 10 total digits ( 0, 1 , 2, 3, 4, 5, 6, 7,8 ,9)
1st digit can be 1 of 10
2nd digit can be 1 of 9 ( 10-1 because a number cannot repeat)
3rd digit can be 1 of 8 ( 9-1 because no number can repeat)
total combinations = 10 * 9 * 8 = 720
