Answer:
I am perfect in maths
I got full marks in maths
Ask me
-2i * -3i
6i
6i^2
6 * -1
-6
Answer: C) -6 or the third option.
Answer:
Rate in still water = 27.5 mph
Current's rate = 12.5 mph
Step-by-step explanation:
Let
x mph = row team rate in still water
y mph = current's rate
<u>Upstream:</u>
Distance = 30 miles
Time = 2 hours
Rate = x - y mph
Then

<u>Downstream:</u>
Distance = 30 miles
Time = 45 minutes
hour
Rate = x + y mph
Then

From the first equation:

From the second equation:

Add these two equations:

Subtract these two equations:

Answer:
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Step-by-step explanation: