Answer:
2x² = -8
x² = -4
The answer is no real solutions (x ∉ R) because a perfect square cannot be negative.
No, the 2 lines can never ever be both parallel and perpendicular if I'm not mistaken. This is because a set of parallel lines will never touch each other at all. However perpendicular lines are two lines that meet up to get an angle of 90. You cannot have two lines that never touch and touch at the same time.
Answer:
4
4z+4
Divide each term of 4z+4 by 4 to get 1+z.
1+z
Answer:
10 minutes?
Step-by-step explanation:
Sorry if it is incorrect but what I did was I found the average of 5 minutes and 15 minutes and got 10.
Here's my problem solving explanation:
(5 + 15) / 2 = 10
The correct answer should be :
Option 3 : 
Hope this helps,
Davinia.
