Answer:
n = 18
Step-by-step explanation:
(2n) and (n + 18) are vertically opposite angles and are congruent, then
2n = n + 18 ( subtract n from both sides )
n = 18
Answer:
Infinite amount of solutions.
Step-by-step explanation:
Note that both sides of the equation is -3x. This means that regardless of what you put into x. It will always be the same on both sides.
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Step-by-step explanation:
3×10^10 is the scientific notation of 30000000000
Answer:
B
Step-by-step explanation:
it is the opposite of A, which is true, as |-8| = 8
