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Juliette [100K]
3 years ago
9

I really need help!!!!

Mathematics
1 answer:
Zepler [3.9K]3 years ago
7 0
The answer should be B.) all you need to do is multiply the 1/2 by y and then do the same by 4. so your answer is 1/2y-2
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In a box of 25 external hard disks, there are 2 defectives. An inspector examines 5 of these hard disks. Find the probability th
Salsk061 [2.6K]

Answer:

0.3667 or 36.67%

Step-by-step explanation:

The probability of getting at least 1 defective hard disk among the 5 (P(X>0)) is equal to 100% minus the probability of getting none defectives (1-P(X=0)).

If 23 out of 25 hard disks are non-defective, the probability is:

P(X>0) = 1 -P(X=0)\\P(X>0) = 1 -\frac{23}{25}*\frac{22}{24} *\frac{21}{23} *\frac{20}{22} *\frac{19}{21}\\ P(X>0) = 0.3667=36.67\%

The probability that there is at least 1 defective hard disk is 0.3667 or 36.67%.

8 0
3 years ago
A group of friends is going to a baseball game. A general admission ticket to the game costs $9.00. A ticket for a fan club memb
AnnyKZ [126]

Answer:

See explanation!

Step-by-step explanation:

The term 9x is comprised of two values: 9 and x. The 9 represents the cost of the general admission tickets. Since the expression is representing the total cost for the group of friends, the number of friends attending must be represented somehow in the equation. Since the $9 is paired with the x, this means that x represents how many of the friends are paying the general admission price. After interpreting both values within the term, the meaning of the term 9x is simply just the total cost of the friends that are paying the general admission price! Hope this helps!

5 0
3 years ago
If y=-12 when x=9, find y when x=-4<br> please answer quickly
pychu [463]

Answer: x=3

Step-by-step explanation:

to make y=-4 from -12 you have to divide by 3. so divide the 9 by 3 to get 3 which is your answer

7 0
2 years ago
Tell whether 4/2 and 14/7 form a proportion
sergejj [24]
Yes both of the two fraction are proportion
3 0
3 years ago
Mike paid $11.71 total
yan [13]

Answer:

Bill received 13.68 change back.

Step-by-step explanation:

20-6.32=13.68

7 0
3 years ago
Read 2 more answers
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