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Lelu [443]
3 years ago
5

Jason has a coupon for $2.50 off any electronic book for an online book store. If the original price, in dollars, of an electron

ic book is p and the discounted price, in dollars, is d, which table shows the relationship between p and d?
Mathematics
1 answer:
lorasvet [3.4K]3 years ago
5 0
Given:

$2.50 off any electronic book for an online bookstore.

let p = original price in dollars
     d = discounted price in dollars

p = d + $2.50 

The equation above is the working equation to determine the original and discounted price of any ebook purchased by Jason. <span />
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Nuetrik [128]
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\frac{12^32^24^4}{4^32^112^2}=
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96
8 0
3 years ago
Read 2 more answers
Someone please help! You have to show your work.
AnnZ [28]
40/50 is the ratio because the cos formula is adjacent over hypotenuse and you can reduce it to 4/5 as a fraction :)
6 0
1 year ago
A group of researchers wants to know whether men are more likely than women to contract a novel coronavirus. They surveyed two r
olasank [31]

Answer:

Test statistic Z= 0.13008 < 1.96 at 0.10 level of significance

null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women

Step-by-step explanation:

<em>Step(I)</em>:-

Given surveyed two random samples of 390 men and 360 women who were tested

first sample proportion

                    p_{1} = \frac{360}{390} = 0.9230

second sample proportion

                  p_{2} = \frac{47}{52} = 0.9038

Step(ii):-

Null hypothesis : H₀ : There is no difference  proportion of positive tests among men is different from the proportion of positive tests among women

Alternative Hypothesis:-

There is difference between proportion of positive tests among men is different from the proportion of positive tests among women

 

Z = \frac{p_{1}- p_{2} }{\sqrt{PQ(\frac{1}{n_{1} }+\frac{1}{n_{2} }  } }

where

          P = \frac{n_{1}p_{1} +n_{2}  p_{2} }{n_{1}+n_{2}  }

         P =  0.920

Z= \frac{0.9230-0.9038}{\sqrt{0.920 X0.08(\frac{1}{390}+\frac{1}{52}  } )}

Test statistic Z =  0.13008

Level of significance = 0.10

The critical value Z₀.₁₀ = 1.645

Test statistic Z=0.13008 < 1.645 at 0.1 level of significance

Null hypothesis is accepted

There is no difference proportion of positive tests among men is different from the proportion of positive tests among women







7 0
3 years ago
23 POINTS HERE PEOPLE
SOVA2 [1]

Hello!  

<h2>Answer: </h2>

23. 138 people voted for Nyemi, 69 people voted for Luke, and 23 people voted for Natalie.

24. Reina did not ride 11/16 of the rides.

<h2>Explanation:</h2>

23:

3 ÷ 5 = 0.6

230 × 0.6 = 138

230 × 0.3 = 69

230 × 0.1 = 23

24:

We know that Alberto rode 5/8 of the rides at the park, and Reina rode half of this.

5/8 × 1/2 = 5/16

16 - 5 = 11

8 0
3 years ago
Read 2 more answers
Will give Brainliest! if right!
mote1985 [20]
The lower quartile is 21 because when you make it in order and find the median you seperate it then when you get the lower median it is 21

Your welcome
8 0
3 years ago
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