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Fudgin [204]
2 years ago
15

A retail store offers all television sets at 80%, or , of their original price if the customer buys a store membership for $100.

If p is the price of a television set, which expression represents the amount that a new customer will have to pay to get the discount? How much will a $1,500 television cost (including the membership fee) if the customer gets the discounted price?
Mathematics
2 answers:
Natasha_Volkova [10]2 years ago
8 0
Let X = be the amount the amount that new customer will have to pay X = 0.8P + 100 Given that the television is $1500, the discounted price is $1200. But the customer will have to pay the membership of $100. Therefore the total amount is $1300.
olchik [2.2K]2 years ago
3 0

Answer:

C.

The expression is , and the cost is $1,300.

Step-by-step explanation;

A retail store offers all television sets at 80%, or , of their original price if the customer buys a store membership for $100. If p is the price of a television set, which expression represents the amount that a new customer will have to pay to get the discount? How much will a $1,500 television cost (including the membership fee) if the costomer gets the discounted price?

A.

The expression is , and cost is $1,100.

B.

The expression is , and the cost is $1,200.

C.

The expression is , and the cost is $1,300.

D.

The expression is , and the cost is $1,400.

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anzhelika [568]

Answer:

n=(\frac{2.58(4.2)}{2})^2 =29.35 \approx 30

So the answer for this case would be n=30 rounded up to the nearest integer

Step-by-step explanation:

Information given

ME = 2 the margin of error desired

\sigma =4.2 standard deviation from previous studies

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =2 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance level is \alpha=0.01 and the critical value would be z_{\alpha/2}=2.58, replacing into formula (b) we got:

n=(\frac{2.58(4.2)}{2})^2 =29.35 \approx 30

So the answer for this case would be n=30 rounded up to the nearest integer

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2 years ago
A bike and skate shop rents bikes for $21 per day and pairs of skates for $20 per day. To remain viable, the shop needs to make
omeli [17]
Ur answer is 6 (20+20+20+20+20+20+21+21+21+21+21+21+21+21+21+21+21+21=372) and they need at least 362 hope this helps I'm pretty sure this is right sorry if it's wrong but it seems right to me
8 0
2 years ago
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Basile [38]

Answer:

The required equation is

d = 4c

where d represents the cost of cookies in dollar and c represents the number of boxes of cookies.

Step-by-step explanation:

Given that, the cost of each box of cookies is $4.

It means,

The cost of 1 box of cookies is $4.

The cost of 2 boxes of cookies is $(4+4)  =$(2×4)

The cost of 3 boxes of cookies is $(4+4+4)  =$(3×4)

The cost of cookies

=(Number of boxes × 4)

The required equation is

d = 4c

where d represents the cost of cookies in dollar and c represents the number of boxes of cookies.                                                    

   

8 0
2 years ago
Jennifer has 12 nickels and dimes. The value of her coins is $1
ELEN [110]

Answer:

One Dollar and 80 cents.

Step-by-step explanation:

12 x 5 is 60. The amount of nickles multiplied by the value of one nickel which is 5 cents. Then you take the value of a dime and multiply it by the amount of dimes, 12. You get 120. Add 60 to 120 and you get 180. One Dollar is 100 cents, add 80 to 100 and you get one Dollar and 80 cents.

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2 years ago
the means of a proportion are 21 and 33. List all possible pairs of positive integers that could be the extremes of the true pro
prisoha [69]
X/21 = y/33

xy = 21·33 = 693

The factors of 693 are 1,3,7,9,11,21,33,63,77,99,231,693.

(x,y) = (1,693), (693,1), (3,231), (231,3), (7,99), (99,7), (9,77), (77,9), (11,63), (63,11), (21,33), (33,21)
7 0
2 years ago
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