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likoan [24]
2 years ago
13

Romano pays 312.50 for a television set. The markup price of the television set is 25%. What equation could you use to find the

amount of money that the store paid for the television set
Mathematics
2 answers:
NARA [144]2 years ago
6 0

Answer:

78.125

Step-by-step explanation:

If 312.50 is 100% then 25% is 78.125

Please mark brainiest if correct!!!!!!!!!

Romashka-Z-Leto [24]2 years ago
4 0

Answer:

1.25D = $312.50

Where D is the amount of money that the store paid for the television set.

Step-by-step explanation:

The mark up is the percentage of the cost of an item added to the cost of the item to get the selling price. When the percentage is applied on the cost, the result is the markup amount which is the profit of the selling entity.

As such, if the cost or the amount of money that the store paid for the television set is D, the mark up amount

= 25% * D

= 0.25D

The selling price of the television set will then be

= 0.25D + D

= 1.25D

Since Romano pays 312.50 for a television set, then it means that

1.25D = $312.50

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Sloan [31]

Answer:

a) 6

Step-by-step explanation:

Expanding the polynomial using the formula:

$(x+y)^n=\sum_{k=0}^n \binom{n}{k} x^{n-k} y^k $

Also

$\binom{n}{k}=\frac{n!}{(n-k)!k!}$

I think you mean 210x^6y^4

We can deduce that this term will be located somewhere in the middle. So I will calculate k= 5; k=6 \text{ and } k =7.

For k=5

$\binom{10}{5} (y)^{10-5} (x)^{5}=\frac{10!}{(10-5)! 5!}(y)^{5} (x)^{5}= \frac{10 \cdot 9 \cdot 8 \cdot 7 \cdot 6 \cdot 5! }{5! \cdot 5 \cdot 4 \cdot 3 \cdot 2 \cdot 1 } \\ =\frac{30240}{120} =252 x^{5} y^{5}$

Note that we actually don't need to do all this process. There's no necessity to calculate the binomial, just x^{n-k} y^k

For k=6

$\binom{10}{6} \left(y\right)^{10-6} \left(x\right)^{6}=\frac{10!}{(10-6)! 6!}\left(y\right)^{4} \left(x\right)^{6}=210 x^{6} y^{4}$

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2 years ago
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PtichkaEL [24]

Answer:

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Step-by-step explanation:

First you make all of the fractions have the common denominator 15.

And then you have -18/15-6/15v+4/15+5/15v

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1 year ago
Using the power series methods solve the 1st order Lane-Emden Equation:
nikklg [1K]

Answer:

Step-by-step explanation:

xy = 2y + xy = 0

Hence, 2y + xy = 0 ---------(1)

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Let x = 0: 2y(n) + ny(n - 1) = 0

2y(n) = -ny(n - 1)

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1 year ago
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chubhunter [2.5K]

Answer:

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Step-by-step explanation:

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Then, we get the radius by determining the distance from either of the circumferential point to the center. 
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The equation for the circle would be,
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