X + y is rational, must x and y each be rational
2 answers:
The rationals are closed under addition, so if x,y are rational then x+y must be rational since Q is a group under addition.
Yes because x and y must be integers
You might be interested in
Answer:
w = 11
Step-by-step explanation:
add 15 to each side of the equation
w = 15 + (-4)
w = 11
Step-by-step explanation:
sin 240° = -½√3 = -0.866
_______
A quadrilateral's angles sum to 360 degrees.
78 + 46 + 118 = 242
360 -242 = 118
The answer will be D, -15, -5, 0, 10, 25