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3 years ago

HELP QUICK!!!!!!!!!!!!!!!!

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

6 0

The constant of variation is another name for the slope, which in this case, would be 1/3.
The question then asks you to solve the equation when x = -3. Plus -3 into the x position, like so:
y = 1/3(-3)
Now solve:
y = -1

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Answer:

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y = 65x + 250

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A collection of five coins has a value of $1 and consists of dimes and

DENIUS [597]

For this case we propose a system of equations. We have to:

x: Let the variable that represents the number of dimes

y: Let the variable that represents the number of quaters

We know that:

One dime equals 10 cents, $0.10

A quater equals 0.25 cents, $0.25

According to the statement we have:

$x + y = 5\\0.10x + 0.25y = 1$

We multiply the first equation by -0.10:

$-0.10x-0.10y = -0.5$

We have the following equivalent system:

$-0.10x-0.10y = -0.5\\0.10x + 0.25y = 1$

We add the equations:

$-0.10x + 0.10x-010y + 0.25y = -0.5 + 1\\0.15y = 0.5\\y = \frac {0.5}{0.15}\\y = 3.33$

Approximately 3 quater coins

$x = 5-y = 5-3 = 2$

And two dimes

Answer:

3 quater

2 dimes

4 0

2 years ago