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Sergio [31]
3 years ago
8

Part of the proceeds from a garage sale was $470 worth of $10 and $20 bills. If there were 14 more $10 bills than $20 bills, fin

d the number of each denomination There were $10 bills and $ 20 bills
Mathematics
1 answer:
Brums [2.3K]3 years ago
5 0

There are 25 $10 bills and 11 $20 bills.

Step-by-step explanation:

Given,

Worth of proceeds from garage = $470

Let,

x be the number of $10 bills

y be the number of $20 bills.

According to given situation;

10x+20y=470       Eqn 1

x = y+14                Eqn 2

Putting value of x from Eqn 2 in Eqn 1

10(y+14)+20y=470\\10y+140+20y=470\\30y=470-140\\30y=330

Dividing both sides by 30

\frac{30y}{30}=\frac{330}{30}\\y=11

Putting y=11 in Eqn 2

x=11+14\\x=25

There are 25 $10 bills and 11 $20 bills.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/1279756
  • brainly.com/question/1284310

#LearnwithBrainly

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user100 [1]
<h2>Hello</h2>

The answers are:

a) The name of the function is y, and it's a Square Root Function.

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<h2>Why?</h2>

The name of a function can be also given as a single letter (y). For this exercise,  the name of the function is "y", and it's a Square Root Function.

The independent variable of a function is the variable we assign the different values. For this exercise, the independent variable is designated with the letter "x".

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A function is the rule that states that there is exactly one output (range value) to the very input (domain value).  A function only exists when there is exactly one output value (range) for each given input (domain), if there is more than one output for each input, the function does not exist.

To evaluate a function we assign values to the independent variable(x), hence:

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Have a nice day!

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3 years ago
jack is 4 times as old as lacy. 9 years from now the sum of their ages will be 68. how old are they now?
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denis23 [38]
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