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Vesnalui [34]
3 years ago
9

Sierra has a total of 61 dimes and quarters in her piggybank. She has 3 more quarters than dimes. The coins have a total value $

10.90. How many dimes and how many quarters does she have? [hint: use the decimal values of the c coins to write an equation.]
Mathematics
1 answer:
cluponka [151]3 years ago
7 0
Since you have two unknowns, you must formulate 2 equations in order to solve the system. Let x be the numbers of dimes and y be the number of quarters. The equations are:

x + y = 61
y = x + 3

Since a dime is 1/10 of a dollar and a quarter is 1/4 of a dollar,
(1/10)x + (1/4)y = 10.90

We made 3 equations. The system is overspecified. Let's just use the first two equations and apply it to the third for verification.

x + (x + 3) = 61
Solving for x,
x = 29
y = 29 + 3 = 32

Verifying,
(1/10)(29) + (1/4)(32) = 10.90

Hence, there are 29 dimes and 32 quarters.
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X = number of servers
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\text {number of guest per table = } 4<span>

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<span>
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8 0
3 years ago
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natta225 [31]

Polynomials consist of both indeterminates and coefficients. The polynomial that is been represented by the algebra tiles is 2x²-4x -6.

<h3>What are polynomials?</h3>

A polynomial consists of both indeterminates and coefficients and involves mathematical operations such as addition, subtraction, multiplication, and division.

In order to find the polynomial that is been represented by the tiles, we will simply, calculate the number of tiles for each variable,

As we can see in the image,

Number of tiles labeled as x² = 2

Number of tiles labeled as -x = 4

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therefore, the polynomial can be written as 2x²-4x -6.

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Learn more about Polynomials:

brainly.com/question/17822016

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2 years ago
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Answer:

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Step-by-step explanation:

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180° - 140°= 40°

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I hope this helps! :)

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Answer:

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3 years ago
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