The total value of all coins together is $2.7
A linear equation only has one or two variables. No variable in a linear equation is raised to a power greater than 1 or used as the denominator of a fraction. When you find pairs of values that make a linear equation true and plot those pairs on a coordinate grid, all of the points lie on the same line
Let the number of nickels and quarters be x.
Value of nickel = 5 cents = $0.05
Value of quarters = 25 cents = $0.25
Thus, the total value equals
0.05x +$1.80 = 0.25x
$1.80 = 0.25x - 0.05x
$1.80 = 0.2x
x = 1.80/0.2
x = 9 coins
Thus the total value of all coins together is ($0.05+$0.25)x 9 = $0.3 x 9
= $2.7
Learn more about Linear equation here :
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Hello from MrBillDoesMath!
Answer: -3 and 2
Discussion:
The equation to solve is:
6/m + 2 = (m+3)/(m-1)
Multiple both sides by m * (m-1).
6/m * (m*(m-1)) + 2 m (m-1) = (m+3)/(m-1) * (m(m-1))
Simplify:
6 (m-1) + 2 m (m-1) = (m+3)*m =>
6m -6 + 2m^2 - 2m = m^2 + 3m =>
2m^2 +4m - 6 = m^2 + 3m. Subtract m^2 and 3m from both sides
m^2 + m - 6 = 0. Factor this equation.
(m +3) ( m-2) = 0 so the solution set is -3 and 2
Thank you,
MrB
Answer:
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Customer 120, Customer Customer 120, and four customers
