6;9 = 2;3
thats one only hope it help a little
Answer:
72 degrees
Step-by-step explanation:
the temperature rose 15, and ended as 87, so the temp was 72 before it rose
Answer:
E is not a subspace of 
Step-by-step explanation:
E is not a subspace of
In order to see this, we must find two points (a,b), (c,d) in E such that (a,b) + (c,d) is not in E.
Consider
(a,b) = (1,1)
(c,d) = (-1,-1)
It is easy to see that both (a,b) and (c,d) are in E since 1*1>0 and (1-)*(-1)>0.
But (a,b) + (c,d) = (1-1, 1-1) = (0,0)
and (0,0) is not in E.
By the way, it can be proved that in any vector space all sub spaces must have the vector zero.
What is inside the square root? Is it just the root of x? Or is it ROOT(x-4) + 5 = 2?
Answer: 9;0;-3
Step-by-step explanation: