Stephanie adds pennies, nickels and quarters to a scale until the mass of the combined coins is $75$75 grams. Each penny has a

Question

3 years ago

11

Stephanie adds pennies, nickels and quarters to a scale until the mass of the combined coins is $75$75 grams. Each penny has a

mass of $2.5$2.5 grams, each nickel has a mass of $5$5 grams and each quarter has a mass of $5.7$5.7 grams.
Create an equation to model this situation, where $x$x is the number of pennies, $y$y is the number of nickels and $z$z is the number of quarters that Stephanie can put on the scale so that the mass of the combined coins is exactly $75$75 grams.

Mathematics

1 answer:

PSYCHO15rus [73] · Answer 1 · 2022-06-15T03:59:47+03:00

PSYCHO15rus [73]3 years ago

4 0

2.5x + 5y + 5.7z = 75

Stephanie adds pennies, nickels and quarters to a scale until the mass of the combined coins is $75$75​ grams. Each penny has a

Stephanie adds pennies, nickels and quarters to a scale until the mass of the combined coins is $75$75 grams. Each penny has a