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serg [7]
2 years ago
13

I am confused please can you help me

Mathematics
1 answer:
lorasvet [3.4K]2 years ago
8 0
Domain x|x = -2, 2
range x|x = -1, 4
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A train leaves San Diego at 1:00 pm. A second train leaves the same city in the same direction at 3:00 pm. The second train trav
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Answer:

The speed of the first train is 45 mph and the speed of the second train is 75 mph

Step-by-step explanation:

Let x represent the speed of the first train in mph. Since the second train, is 30 mph faster then the first, therefore the speed of the second train is (x + 30).

The first train leaves at 1:00 pm, therefore at 6:00 pm, the time taken is 5 hours. Therefore the distance covered by the first train at 6:00 pm = x mph * 5 hours = 5x miles

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Therefore the speed of the first train is 45 mph and the speed of the second train is 75 mph (45 mph + 30 mph).

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2 years ago
Hernando's salary was $54,500 last year. This year his salary was cut to $52,355. Find the percent decrease. Round to the neares
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