Julie = x
Ted = 2x
Mike = 3x
x+2x+3x= 210lbs (Add all together)
6x=210lb
6x/6 = 210/6 (divide both sides by 6 to find out what x is)
x=35 ( Julie's weight)
2x= 70 (Ted's Weight)
3x= 105 (Mike's Weight)
Answer:
![-57-39i](https://tex.z-dn.net/?f=-57-39i)
Step-by-step explanation:
So we have the expression:
![(7+2i)(-9-3i)](https://tex.z-dn.net/?f=%287%2B2i%29%28-9-3i%29)
FOIL:
![=7(-9)+7(-3i)+2i(-9)+2i(-3i)](https://tex.z-dn.net/?f=%3D7%28-9%29%2B7%28-3i%29%2B2i%28-9%29%2B2i%28-3i%29)
Simplify:
![=-63-21i-18i-6i^2](https://tex.z-dn.net/?f=%3D-63-21i-18i-6i%5E2)
Recall that i² is just -1. Thus:
![=-63-21i-18i-6(-1)](https://tex.z-dn.net/?f=%3D-63-21i-18i-6%28-1%29)
Simplify:
![=-63-21i-18i+6](https://tex.z-dn.net/?f=%3D-63-21i-18i%2B6)
Combine like terms:
![=(-63+6)+(-21i-18i)](https://tex.z-dn.net/?f=%3D%28-63%2B6%29%2B%28-21i-18i%29)
Add:
![=-57-39i](https://tex.z-dn.net/?f=%3D-57-39i)
And we're done!