The answer is: [D]: vertical angles.
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For this case we must find the value of "x" of the following expression:

Multiplying by 2 on both sides of the equation:

Subtracting 8x from both sides of the equation:

Adding 16 to both sides:

Dividing between -2 on both sides:

Answer:

Well, things like sporting events, or freak storms are measured in days, or weeks. Depends. For weather, it could be hurricanes, tornado's, or even large fires(not quite weather, but could be)
Step-by-step explanation:

Answer:
B) 40 degrees
Step-by-step explanation:
90 + 50 = 140
Each triangle have 180 °
180 - 140 = 40