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mars1129 [50]
3 years ago
11

Which plane figure generates a cylinder when it rotates about the dashed line?

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
8 0
The circle will form a sphere. (See 1st figure attached)

The rhombus (it can also be a square) will form a 2 cones attached at the bottom. (See 2nd figure attached)

The rectangle will form a cylinder. (See 3rd figure attached)

The triangle will form a cone.


Answer: The third figure.

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Is square meters a type of surface area
Irina18 [472]

Yes square meters is a type of surface area.

7 0
3 years ago
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:
P = 13 / 1000
   = 0.013

Therefore, 
N = <span>0.013 </span>× 30000
   = 390

Hence, the number of new cars sold that experienced a problem with the power door locks within the first 5000 miles will be 390.
         
4 0
3 years ago
What is 5(2 + x) = 5 ?
Alex787 [66]

5(2+x)=5

or, 10+5x=5

or, 5x= -5

or, x= -1

Hope it helps

8 0
3 years ago
Read 2 more answers
Given that D is the midpoint of AB and B is the midpoint of AC which statement must be true a) AD= 1/3AC
garik1379 [7]

Answer:

AD = 1/4AC

Step-by-step explanation:

Given that,

D is the the midpoint of AB

Therefore

AB = AD + DB

Since, D is the midpoint of the AB, therefore AD = DB

AB = AD + AD

AB = 2AD (i)

Similarly, B is the midpoint of AC

Hence,

AC = AB + BC

AC = AB + AB (because B is the midpoint)

AC = 2AB (ii)

By putting the value of AB from equation i to equation ii, we get

AC = 2(2AD)

AC = 4AD

AC/4 = AD

AD = 1/4AC

3 0
3 years ago
The table below shows the fourth powers of different numbers: Number (x) 1 −1 3 −3 Fourth power of the number (y) 1 1 81 81 Part
Katarina [22]

Where is the table?????

5 0
3 years ago
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