Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total
1 answer:
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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.
Answer:
If the signs of rational numbers are same, then the answer is positive.
If the signs of rational numbers are different, then the answer is negative.
Step-by-step explanation:
Consider the provided information.
A: When multiplying or dividing rational numbers, when will the answer be positive?
If we are multiplying or dividing rational numbers the answer will be positive if and only if both the rational numbers have same sign.
For example: Multiply 2 and 4.
2×4=8 (same sign)
or
Multiply -2 and -4.
-2×-4=8 (same sign)
8 is a positive rational number.
Now divided 2 and 4.
or
Divided -2 and -4.
1/2 is a positive rational number.
Hence, If the signs of rational numbers are same, then the answer is positive.
B: When multiplying or dividing rational numbers, when will the answer be negative?
If we are multiplying or dividing rational numbers the answer will be negative if and only if both the rational numbers have different sign.
For example: Multiply 2 and -4.
2×-4=-8 (different sign)
or
Multiply -2 and 4.
-2×4=-8 (different sign)
-8 is a negative rational number.
Now divided 2 and -4.
or
Divided -2 and 4.
-1/2 is a negative rational number
Hence, If the signs of rational numbers are different, then the answer is negative.