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2 years ago

Plss help get brainiest if right!!

Mathematics

1 answer:

Fantom [35]2 years ago

8 0

Answer:

18 quarters
7 dimes

Step-by-step explanation:

The given relations can be used to write two equations describing the coins. One equation can express the total number of coins; the other, their total value.

<h3>setup</h3>

Let d and q represent the numbers of dimes and quarters, respectively. The the total number of coins is ...

d + q = 25

and their total value is ...

0.10d +0.25q = 5.20

<h3>solution</h3>

Using the first equation to write an expression for d, we can substitute that into the second equation.

d = 25 -q

0.10(25 -q) +0.25q = 5.20

0.15q = 2.70 . . . . . . . . . collect terms, subtract 2.50

q = 18 . . . . . . . . . . . divide by 0.15

d = 25 -q = 7

You have 18 quarters and 7 dimes.

_____

<em>Additional comment</em>

It is generally convenient to solve for the number of the higher-value coin. That way, the numbers in the equations stay positive, tending to reduce errors.

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Answer:

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Step-by-step explanation:

Given,

f = {(-1, 4),(1, 9),(4, 0)},

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Since,

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Hence, the domain of g/f = {-1}

And, g/f = {(-1, 2)}

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3 years ago

Please answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!

vaieri [72.5K]

Add the ratios together:

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Divide the length of NQ by that:

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