The answer is
C.
Adding any positive value to

won't really make

into a rational number, so the way you have to do it add the negative self, -

to make it into 0. Any number plus its negative value would result in 0, which is a rational number.
Answer:
A
Step-by-step explanation:
b must always be greater than 0 since 12b-15 must always be greater than 21. You can simplify the ineqaulity to see things easier; 12b>36. Again, this ineqaulity can be simplified; b>3. A is the closest answer here, but there should be an open interval at 3 for A to be correct.
6.3 minutes: 6 minutes and 20 seconds, I believe.
6x-5=3x+4
+5 +5
6x=3x+9
-3x -3x
3x=9
(divide both sides by 3)
x=3
Answer:
5 units
Step-by-step explanation:
Even if there is a transformation, it is asking for the length.
Therefore the length of WZ is 5 units