Answer:
x=-1
Step-by-step explanation:
By adding the bottom lines you can get
2x+11 = x+10
Simplifying this gets you
x=-1
For the given vectors
and 
The dot product of vectors a and b is defined as = 
So, 

= -16+12
= -4
Well she can only buy five times a week. So would the inequality be something like 5 is less then or equal to 10. Sorry if I’m wrong
Amount of water after splash = 25(4/5) = 20L
Amount of water after Tina adds water = 20L + 7L = 27L
Answer:
-2x-2y-2z I think that is answer