X = 7
5 + x can also be written as 5 + 7
5 + 7 = 12
cant help when you put question marks!
please do this better!
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.
Answer:
A GMC truck with a standard cab but a long bed is more than 18 1/2 feet in it's total length. A truck with a double cab and a regular bed is just slightly more than 19 feet long. If a pickup has a larger crew cab with a standard box, the vehicle is about 20 feet long. That depends though, because the sizes may vary depending on the truck
Step-by-step explanation:
Answer:
d=1.7, b=7.1
Step-by-step explanation:
3√3/3, so √3 is d, which is 1.7, b is 5 x √2, and its 7.07, so 7.1