Hey, me again! So, I'll be giving you the totals for EACH group.
For the first group, multiply 1/8 by 3 to get the answer;
3/8 lbs
Do the same for this group (and all of the others) so that the answers are:
Group 2 - 3/4lbs
Group 3 - 2/2 = 1lb
Group 4 - 5/8lb
Group 5 - 7/8
Answer: 0.8571
The explanation is in the image please
Complex numbers are divided into two parts; real and imaginary parts. The value of Z3 is 
Given that:


Since O is the origin, then:

This means that:

So, we have:

Collect like terms


Hence, complex number Z3 is 
Read more about complex numbers at:
brainly.com/question/18509723
I believe this is true....lets say the plane takes off and goes up 500 ft.....it circles, but then it has to come back down...land...so it comes down 500 ft...
500 - 500 = 0