Using proportions, it is found that the boat can go 6 m/s in still water.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In this problem, we have that:
- Down the river, the speed is v + 2.
- Up the river, the speed is v - 2.
He goes twice as fast down the river, hence:
v + 2 = 2(v - 2).
v + 2 = 2v - 4
2v - v = 2 + 4
v = 6.
The boat can go 6 m/s in still water.
More can be learned about proportions at brainly.com/question/24372153
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Answer:
x(8;2)
Step-by-step explanation:
i think that
You move the +4a to the left side of the equal sign and that becomes a negative
9a-2-4a=c
You move -2 to the right side of the equal sign and that becomes a positive
9a-4a=c+2
Combine like terms
5a=c+2
Divide by 5 from each side
a=(c+2)/5
Answer:
the equation is wrong
Step-by-step explanation:
=> 74-25=59
since 74 - 25 equals to 59 in order to find the addition sentence that will check the subtraction problem is true and 59 and 3/5 or you can add add 59 and 25 to check if the problem was solved correctly
=> 59+25
add 59 to 25
=> 84
this means the question is wrong
Answer: Here are two inequalities. Hope this is good.
4<x<9
9>x<4