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kakasveta [241]
3 years ago
10

Triangle ABC is graphed on the coordinate plane below.

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Count point A to point B on the x-axis.

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For a sample of 9 automobiles, the mileage (in 1000s of miles) at which the original front brake pads were worn to 9% of their o
guapka [62]

Answer:

CI =[- 4.588; 15.4]

Since the calculated value of t= 4.244  falls in the critical region so we reject H0 and conclude that we  are not confident that the mean difference in lifetime between front and rear brake pads is 99.5%

Step-by-step explanation:

The given data is

Car      Rear      Front           d= rear- front

1         40.6           32.5             8.1

2         35.4            27.1             8.3

3         46.6           35.6              11

4         47.3           35.6             11.7

5        38.7           30.3             8.4

6        51.2              41.1             10.1

7        50.6           40.7             9.9

8       45.9            34.3             11.6

<u>9       47.2            36.5             10.7</u>

∑                                           = 89.8

Let the hypotheses be

H0: ud= 0 against the claim Ha: ud ≠0

The degrees of freedom = n-1= 9-1= 8

The significance level is 0.05

The test statistic is

t= d`/sd/√n

The critical region is ║t║≤ t (0.025,8) = ±2.306

Sd= 7.05434553

d`=∑d/n= 89.8/9= 9.978

Therefore

t= d`/ sd/√n

t= 9.978/ 7.054/√9

t= 4.244

1) Since the calculated value of t= 4.244  falls in the critical region so we reject H0 and conclude that we  are not confident that the mean difference in lifetime between front and rear brake pads is 99.5%

2) the confidence interval for the difference of two samples can be calculated by

d ` ± td sd/√n

9.978 ±2.306* 7.054/√9

- 4.588; 15.4

7 0
3 years ago
The circumference of a circle is 3Ï€ in.
allsm [11]
I have no clue/././././.'/

3 0
3 years ago
A teacher buys packs of notebooks to give to his students. The ratio of gold notebooks to red notebooks is represented in the ta
Naddika [18.5K]

Answer:

there would be 40 gold notebooks

Step-by-step explanation:

if the ratio is 5g to 3r i took the 24 red and divided it by 3 which gave me 8. I then multiplied 8 by 5 and got 40. so 40:24 is equal to 5:3

4 0
3 years ago
Nicole's getaway spa (ngs) has been so successful that nicole has decided to expand her spa by selling merchandise. she sells th
Margarita [4]

The journal entry will be prepared thus:

Date General Journal Debit Credit

2-Aug

Cash $540

Unearned Service Revenue  $378

Sales Revenue  $162

2-Aug

Cost of goods sold $105

Inventory  $105

3-Aug

Accounts receivable $550

Sales revenue  $550

3-Aug

Cost of goods sold $450

Inventory  $450

6-Aug

Sales return (550/5) $110

Accounts receivable  $110

6-Aug

Inventory $90

Cost of goods sold (450/5)  $90

10-Aug

Unearned service revenue $126

Service Revenue  $126

(378/3 = 126 each)  

20-Aug

Cash $350

Sales revenue  $350

20-Aug

Cost of goods sold $121

Inventory  $121

22-Aug

Cash $440

Accounts receivable $440

<h3>What is a journal entry?</h3>

A journal entry is the act of recording any transaction, whether one that is economic or not.

An accounting diary that displays the debit and credit balances of a corporation lists transactions. Multiple recordings, each of which is either a debit or a credit, may be included in the journal entry.

Learn more about journal entry on:

brainly.com/question/14279491

#SPJ1

Aug.2 Sold a bundle of spa services with a merchandise basket. When sold separately, the spa service part of the bundle sells for $420 and the merchandise basket normally sells for $180. Together, the bundle was sold to Val Amy for cash at a selling price of $540 (total). Val booked a spa treatment for August 10, and she took the basket of goods with her. The goods had cost NGS $105.

Aug.3 Sold 5 identical items of merchandise to Cosmetics R Us on account at a selling price of $550 (total); terms n/30. The goods cost NGS $450.

Aug.6 Cosmetics R Us returned one of the five items purchased on August 3. The item could still be sold by NGS in the future and credit was given to the customer.

Aug.10 Val Amy used one of the three spa treatments she had purchased as part of the bundle sold to her on August 2.

Aug.20 Sold two at-home spa kits to Meghan Witzel for $350 cash. The goods cost NGS $121.

Aug.22 Cosmetics R Us paid its remaining account balance in full.

Prepare all journal entries

5 0
1 year ago
What is the answer please
Daniel [21]

Answer:

the process by which green plants turn carbon dioxide and water into food using energy from sunlight

4 0
3 years ago
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