Each of A, C, and D are rational, so presumably B is the answer here.
A is rational, since

, so

.
C is also rational. If

, then

. This would mean

, and so

.
D is rational by a similar argument. If

, then

. So,

, which means

.
Answer
2.5w+4=2u
3. z+6*y
4. 2.5/a=4
Step-by-step explanation:
sorry about the other ones they were confusing hope these are right if not im so sorry
Answer:
12.16
Step-by-step explanation:
I used the Pythagorean theorem
2 squared is 4
12 squared is 144
added together gets 148
the radical is 12.16 rounded
Answer:
y = -2/4x + 1
Step-by-step explanation:
this is what I got
Yes you used the correct steps in the right order