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Kennedy has $0.81 worth of pennies and nickels. she has 9 more nickels than pennies. write a system of equations that could be used to determine the number of pennies and the number of nickels that kennedy has. define the variables that you use to write the system.

Respuesta :

The equation that can be used to determine the number of pennies and the number of nickels is (x + x + 9 = 0.81).

What exactly are equations?

  • A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions.
  • A mathematical statement that has an "equal to" symbol between two expressions with equal values is called an equation.
  • As in 3x + 5 Equals 15, for instance.
  • Equations come in a variety of forms, including linear, quadratic, cubic, and others.

So, the equation that can be used to solve the given situation:

  • The worth of pennies and nickels is $0.81.
  • He has 9 more nickels tam pennies.
  • So, take the variable 'x'.
  • Let, the number of pennies is 'x' and the number of nickels is '9 + x'.

From the equation:

  • x + x + 9 = 0.81

Therefore, the equation that can be used to determine the number of pennies and the number of nickels is (x + x + 9 = 0.81).

Know more about equations here:

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