What is a negative minus a negative
2 answers:
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Answer:
The System of inequality is ,
1. y > 2 x + p
2. y < 2 x + p
Suppose we assign some values to p and q and draw its graph
And, then the inequality sign on both inequalities is reversed
3. y < 2 x + p
4. y > 2 x + p
And , then draw it's graph
it has been found that, the solution set of both the inequality remains same.That is there is no point or set of points , which satisfy both the system of inequality.
The system has no solution.
Answer:
They will meet in 1.8 hours.
Step-by-step explanation:
Given that, distance between trains = 306 miles
Let they take time to meet each other.
Speed of first train = 90 mph
Speed of second train = 80 mph
Let distance traveled by first train = miles
Formula for distance:
Distance traveled by first train,
Let distance traveled by first train = miles
Formula for distance:
Distance traveled by first train,
Total distance traveled is 306 miles.
i.e.
They will meet in 1.8 hours.