Hi please help i’ll give brainliest if you give a correct answer and show your work!
1 answer:
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We will use distance formula which states:
where 'd' is the distance, 'r' is rate or speed and 't' is time taken.
So,
Let 'u' be the speed of boat in still water.
A person rows 14 miles downstream to the fishing spot.
So, the speed of boat downstream = (u+6) mph
Time taken by boat to go downstream = hr
He rows 2 miles upstream from the fishing spot.
So, the speed of boat upstream = (u-6) mph
Time taken by boat to go upstream = hr
Since, The person took same amount of time in going downstream and then going upstream.
So,
Cross multiplying, we get
u = 8
So, speed of boat in still water is 8mph.
Now, Time taken in going downstream =
=
= 1 hr
Now, Time taken in going upstream =
=
= 1 hr
So, total time taken to cover 16 miles is 2 hours.
Solving:
Delete the first parentheses by the distributive property, with the distributive property, we multiply the '3' first, then resolve it and the second parentheses eliminate by changing the sign:
<span>Now, put the numbers with letter (incognito) to the right and numbers without letter to the left, changing the signal when changing sides.
</span>
Answer:
Delete the first parentheses by the distributive property, with the distributive property, we multiply the '3' first, then resolve it and the second parentheses eliminate by changing the sign:
<span>Now, put the numbers with letter (incognito) to the right and numbers without letter to the left, changing the signal when changing sides.
</span>
Answer: