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solong [7]
2 years ago
8

Find the slope and y-intercept of the graph of the equation: y=9x+3

Mathematics
1 answer:
frosja888 [35]2 years ago
7 0

Answer:

slope is 9. intercept is (0,3)

Step-by-step explanation:

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Copies of a famous painting were created at the local art museum for visitors to purchase. The copies had a 30% smaller area tha
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12.6 square feet

Step-by-step explanation:

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18ft is 100% of the original

and the area of the copies are 70%

Copies: x

x/70 = 18/100

70(18) = 1260

1260/100 = 12.6

x = 12.6

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Determine whether a triangle can be formed with the given side lengths.   11 ft, 2 ft, 15 ft
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each pail of plaster covers 90 square feet of ceiling. What is the least number of pails of plaster you would need to buy to cov
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7 0
3 years ago
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An automobile manufacturer sold 30,000 new cars, one to each of 30,000 customers, in a certain year. The manufacturer was intere
snow_lady [41]
A) In order to create a sampling plan, you need to follow the following 5 steps:
    1) Define the sample population: who are the customers you want to contact?
       The costumers who bought a new car on a certain year.
    2) Define the size of population: how many customers are you going to contact?
       Of the 30000 customers who bought a car, you want to contact 1000 customers.
    3) Define the contact options: how are you going to contact the customers?
       You have a list of names and addresses, therefore you can send a questionnaire via mail.
    4) Form a sampling frame: what is the time or contact frame to get in touch with your customers? 
       You will send the questionnaires and you will wait two months for the answer.
    5) Define the analysis method: is yours a qualitative or quantitative research?
     In your case, you want a quantitative research and therefore a probabilistic sampling.

B) The 32.5% probability refers to customers having issues with the power doors locks among the costumers who had problems, it does not consider the customers who did not have any problem or those who had problems after the first 5000 miles.

C) In order to find the probability of a power door lock problem if there have been problems within the first 5000 miles, we need to consider the whole sample:
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Hence, the number of new cars sold that experienced a problem with the power door locks within the first 5000 miles will be 390.
         
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