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FORMULA AND CALCULATOR
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Using the calculator shown below, teachers and students can simulate different scenarios by
changing the right hand side or left hand side value of equation 1, equation 2 or both.
X +
Y =
Equation 1
X + Y = Equation 2
Answer, Quarter; X =
Answer, Dime; Y =
How can you check that your answer is correct? You do the substitution of value of x = 30 and y = 20 in both equation 1 and equation 2.
equation 1 : 30 + 20 = 50 ? ; answer is yes.
equation 2 : 0.25(30) + 0.10(20) = 9.50 ?; answer is yes.
Therefore x=30 and y = 20 are the correct answers.
HOW TO USE:
Enter new number in input box. Answer is automatic
To check your answer substitute the value of X and Y in both equation 1 and equation 2.
To do "what if " scenario analysis , just change any variables.
Visit Determinant of 2 x 2 Matrix for more explanation on how this automatic scenario analysis becomes possible
IMPORTANT to enter 1 if there is no constant on X and Y. For negative number enter the negative sign, for example, -1. Do not include the comma symbol , because it will display Not a Number (NaN) error message.
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INVBAT.COM is helping students, teachers, and employees to create their own customized voice calculator website that will help them to enjoy and not fear a fast coming digital workplace like industrial internet of things and internet of things powered by machine learning, deep learning, and artificial intelligence. Imagine now you can solve similar problem as shown in above example in less than a minute by using your smarthphone, tablet, laptop or desktop computer. This computational speed is not possible before internet and cloud technology.
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