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inessss [21]
2 years ago
9

25 point to who gets these problems plus thank

Mathematics
1 answer:
otez555 [7]2 years ago
5 0

Cameron's current service charge of $0.95 per song, and the new service charge of $0.89 per song and $12 fee for joining, gives;

  • Formula for finding the number of songs that makes the cost of both services the same is; 0.95•s = 12 + 0.89•s

  • Computing the value of <em>s </em>that satisfies the above equation gives the number of songs at which the cost of both service is the same as 200 songs

  • The interpretation is the the cost of either service is the same when 200 songs are downloaded

<h3>How can the equation that gives the required number of songs be found?</h3>

To Formulate

The charges for songs on the current music service is, C1 = 0.95•s

The charges for the new download service is, C2 = 12 + 0.89•s

Where the $12 is the joining fee

When the cost is the same for both service, we have;

C1 = C2

Which gives;

  • 0.95•s = 12 + 0.89•s

The equation to represent when the cost for both service is the same is therefore;

0.95•s = 12 + 0.89•s

Computing;

The number of songs that gives the same costs is therefore;

0.95•s = 12 + 0.89•s

12 = 0.95•s - 0.89•s = 0.06•s

s = 12 ÷ 0.06 = 200

  • The number of songs at which the cost of each option will be the same is <em>s </em>= 200 songs

Interpreting the solution;

The interpretation is, the cost of songs downloaded on both service will be the same, when 200 songs are downloaded.

Learn more about writing formulas here:

brainly.com/question/26666091

#SPJ1

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Answer: p > \frac{3}{7}

Step-by-step explanation:

-21p + 69 > -49p + 81

         -69                -69

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3 years ago
Find the value of $B - A$ if the graph of $Ax + By = 3$ passes through the point $(-7,2),$ and is parallel to the graph of $x +
Salsk061 [2.6K]

Answer:

-6

Step-by-step explanation:

We know that since Ax + By = 3 passes through (-7, 2), then if we plug -7 in for x and 2 in for y, the equation is satisfied. So, let's do that:

Ax + By = 3

A * (-7) + B * 2 = 3

-7A + 2B = 3

We also know that this line is parallel to x + 3y = -5, which means their slopes are the same. Let's solve for y in the second equation:

x + 3y = -5

3y = -x - 5

y = (-1/3)x - (5/3)

So, the slope of this line is -1/3, which means the slope of Ax + By = 3 is also -1/3. Let's solve for y in the first equation:

Ax + By = 3

By = -Ax + 3

y = (-A/B)x + 3/B

This means that -A/B = -1/3. So, we have a relationship between A and B:

-A/B = -1/3

A/B = 1/3

B = 3A

Plug 3A in for B into the equation we had where -7A + 2B = 3:

-7A + 2B = 3

-7A + 2 * 3A = 3

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-A = 3

A = -3

Use this to solve for B:

B = 3A

B = 3 * (-3) = -9

So, B = -9 and A = -3. Then B - A is:

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<em>~ an aesthetics lover</em>

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Answer:

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Step-by-step explanation:

We are given that

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Using the formula

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t=\frac{ln(1.2384}{0.007}

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Hence,In 2047 the U.S population will reach 400 million people.

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