A rational number is a number that can be written into a fraction. pi, some square roots, e, etc. are irrational numbers(opposite of rational numbers)(numbers that cannot be written into a fraction).
since the first number is negative and the 2nd is positive just add the two together
-28 + 65 = 93 degree warmer in Miami
240 degrees is the only one that could not be a value of theta.
X - 2y = - 9
7x + 2y = 1
x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8
x = - 1
- 1 - 2y = - 9
2y = 8
y = 4
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