Answer:
7
Step-by-step explanation:
take the perimeter of what you have now (14) and divide it by 2, because it is dilated by 1/2
Let the speed of the boat be x
so going against the current the speed is x-7
going with the current the speed is x+7
let the distance be d
time = distance / speed
time to go against the current = d/(x-7)
time to go with the current = d/(x+7)
time going against the current is 3 times going <span>with the current
</span>
d/(x-7) = 3d/(x+7)
⇒⇒⇒ divide by d
1/(x-7)
= 3/(x+7)
x+7
= 3(x-7)
x+7 = 3x - 21
2x = 28
x = 14
So, the speed of the boat in still water is = 14 mph
First you had to expanded form.
Finally you can also add by similar to elements.
Final answer:
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
Answer:
2 is your answer. hope helpful answer
Answer:c over 16 and to be exact thx for
Step-by-step explanation: