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Setler79 [48]
4 years ago
10

Brianna paid $13.77 for a new CD. The price includes a 6% sales tax. How much was the CD before the tax?

Mathematics
1 answer:
Lilit [14]4 years ago
8 0
$12.94 is what the CD would be before the 6% sales tax
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Answer:

Step-by-step explanation:

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The area of the shaded triangle is 18 because the base is 6 and the height is 6.

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6 0
3 years ago
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Olin [163]
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4 0
3 years ago
Can someone help me with math?
Phoenix [80]
An example of a direct variation scenario is the increase in the income of a start-up bakeshop when the number of cakes sold increase. Example data are (4, $ 100), (5, $ 125), (6, $ 150), and (7, $ 175). 

The example of indirect variation scenario is the decrease in time it takes to reach a destination when the speed of the mobile increases. This is shown in the data points: (10 kph, 10 mins), (12 kph, 8 mins), (14 kph, 6 mins), and (16 kph, 4 mins). 

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Find the maximum value of the function <br><img src="https://tex.z-dn.net/?f=%20-%208%20%2B%202x%20-%204x%20%5E%7B2%7D%20" id="T
Mkey [24]

Answer:

x = \frac{-b}{2a}

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7 0
4 years ago
A hotel wants to know if there's a relationship between gender and the way customers make room reservations. A manager takes a r
padilas [110]

Answer:

Step-by-step explanation:

Here,

H_o: The way of reservation is independent of gender.

H_a: The way of reservation is not independent of gender.

We use a chi square test because we can calculate the expected frequencies for this chart.

Doing an Expected Value Chart,          

         

33.7625   9.7125   30.525  

39.2375   11.2875   35.475

Using chi^2 = Sum[(O - E)^2/E],          

chi^2 =    4.482385929

With df = (a - 1)(b - 1), where a and b are the number of categories of each variable,

a =    3      

b =    2

df =    2

Thus, the critical value is

significance level =    0.05

chi^2(critical) =    5.991464547

Also, the p value is

P =    0.106331579

Thus, comparing chi^2 and chi^2(critical) [or, p and significance level], we   FAIL TO REJECT THE NULL HYPOTHESIS.

Thus, there is no significant evidence that the way of reservation is dependent of gender. [CONCLUSION]

6 0
4 years ago
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