Answer:
Y = 5 - 2/x
Step-by-step explanation:
There is 17% error in the guess.
Step-by-step explanation:
Given,
Number of marbles in jar = Exact value = 240
Closest guess = Approx Value = 280
Percent error = 
Percent error = 
Percent error = 
Percent error = 
Rounding off to nearest whole percent
Percent error = 17%
There is 17% error in the guess.
Keywords: percentage, division
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That's the exact answer; they usually want a calculator approximation at this point,

Answer:
n = 2
Step-by-step explanation:
Here, we want to write the simplified form of the equation given in the question.
Firstly, we write the equation in an equation form:
4/5n -1/5 = 2/5n
5n(4/5n -1/5) = 2/5n(5n)
(4/5n * 5n) -(1/5)(5n) = 2
4- n = 2
n =4-2
n = 2