Answer:
11 + 13i
Step-by-step explanation:
A must know is that

Complex numbers
1st: foil the equations


2nd Combine like terms and substitute



120+120=240
The roof of the house is 240 ft^2
Answer:
57
Step-by-step explanation:
variables
substitution
X=5/2,x=2
i cant explain it but if you got to symbolab.com and input the equation it will solve and show you the steps
Divide total cups he drank by the # of cups in each bottle.
7 ÷ 3= 2.3333
Since each bottle only holds 3 cups, he drank 3 bottles of water. He didn't drink all the water in the third bottle, but he started drinking the third bottle.
ANSWER: 3 bottles
Hope this helps! :)