Answer: x = 20.
Step-by-step explanation:
x and (3x + 10) combine to form a right angle, shown in the diagram by the small square joining the perpendicular lines.
Right angles are 90 degrees, so you can add both angles to get 90:
The Robinson family traveled a total of 240 miles in 6 hours on their trip to visit relatives. If they travel at a constant, pro
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