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AysviL [449]
3 years ago
10

Suppose a manufacturer knows from previous data that 2.5% of one type of lightbulb are defective. The quality control inspector

randomly selects bulbs until a defective one is found. Is this a binomial experiment? Why or why not?
Mathematics
2 answers:
Anastasy [175]3 years ago
6 0

Answer:

No, because the number of trials is not fixed.

Step-by-step explanation:

a. pe. x

9966 [12]3 years ago
4 0

Answer:B

Step-by-step explanation: khan - There is no fixed number of trials , so D is not a binomial variable.

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Y is 5 less than the product of 4 and x
Alina [70]

Answer: y=4x-5

Y=4x-5

6 0
4 years ago
A thermometer is taken from a room where the temperature is 23oC to the outdoors, where the temperature is −9oC. After one minut
Helga [31]

Answer:

(a)\ 15\textdegree C\\(b)\ After\ 3\ minutes\ and\ 52.5\ Seconds\ from\ start

Step-by-step explanation:

Temperature in the room =23\textdegree C

Decrease in the temperature(outdoors)=23-15=8\textdegree C in 1\ minute.

Rate of decrease=8\textdegree C/minute

Let\ after\ x\ minutes\ temperature\ is\ y\\y=23-8x\ \ \ \ y\geq -9\textdegree C

(a) After 4\ more\ minutes\ total\ time\ is=1+4=5\ minutes

y=23-5\times 8\\y=-17\\

But it is not possible as outdoor temperature is -9\textdegree C so after -9\textdegree C temperature decrease will not occur.

Hence after 4 more minutes temperature=-9\textdegree C

(b) Let after t\ minutes temperature is -8\textdegree C

Here x=t,\ y=-8\textdegree C

-8=23-8x\\8x=23+8\\8x=31\\x=\frac{31}{8}\\x=3.875\ minutes=3\ minutes\ and\ 52.5\ seconds

3 0
3 years ago
The quotient of a number and three
Tanzania [10]

Answer:

a.  x/3.

Step-by-step explanation:

You divide to find a quotient so it is x / 3.

5 0
3 years ago
the gravitational attraction between two masses varies inversely as the square of the distance between them. if the attraction f
Marat540 [252]

Answer:

  33 1/3 lb

Step-by-step explanation:

When the distance between them goes from 8 ft to 12 ft, it is 1.5 times what it was. Then the force will be multiplied by the inverse of the square of this:

  (75 lb)×1/(1.5²) = 75/2.25 lb = 33 1/3 lb

At 12 feet apart, the attraction force is 33 1/3 pounds.

8 0
4 years ago
2x + 12 = 18 - X<br> A. X= 3<br> B. X = 10<br> C. x = 6<br> D. X= 2
pashok25 [27]
The answer is D the last one
7 0
3 years ago
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