Answer:
C. 180 degrees, 2 units down
Step-by-step explanation:
For 180 degrees rotation, the rule is (x, y) -----> (-x, -y)
Choose a point
Point C (6,2) -----> (-6,-2)
shift that point two down and it lines up with C'
Answer is:
y= 1/2x +3
1/2x is the gradient
+3 is the y-intercept
Hope that helps!
Your answer is 38-8i because what you do is 1 times 3 and get 3 then 1 times 7i and get 7i then you do -5i times 3 and you get -15i then -5i times 7i and you get -35i2 and the square will cancel out the negative and make it 35 then add that to the 3 and you get 38 then take the -15i +7i and get -8 do your answer is 38-8i
For number 1. it is wrong. It is fresh water. Ocean water is salt water. I don't know the rest, sorry. I will come back if I find out though! :D
The answer to your question is n=0 or n=1/10
