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vitfil [10]
3 years ago
12

In the same set of 1,000 integers from 1 to 1,000, an integer chosen at random on a single trial should be an integer from 1 to

25 about 25 out of every 1,000 trials, or one out of every 40 integers selected. How many integers between 1 and 25 would you expect to appear in a sample of 80 trials?
A. A sample of 80 integers would be expected to have no integers from 1 to 25.
B. A sample of 80 integers would be expected to have two integers from 1 to 25.
C. A sample of 80 integers would be expected to have four integers from 1 to 25.

Reminder: Don't post nonsense answer like "nweudnne" for points or ill do it right back at you and explain your answer.
Mathematics
1 answer:
uysha [10]3 years ago
8 0

Answer:

do u still need help

Step-by-step explanation:

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Prove that: (12^13–12^12+12^11)(11^9–11^8+11^7) is divisible by 3, 7, 19, and 37. The answer should be like: x^b*3*7*19*37. Also
n200080 [17]

Answer:

Step-by-step explanation:

Given (12^13–12^12+12^11)(11^9–11^8+11^7),

(12^13–12^12+12^11)(11^9–11^8+11^7) =

[(12^12)12 – 12^12 + 12^11][(11^8)11 – 11^8 + 11^7)

[(12^12)(12 – 1) + 12^11][(11^8)(11 – 1) + 11^7] =

(12^12(11) + 12^11)(11^8(10) + 11^7) =

(12^11(12x11) + 12^11)(11^7(11x10) + 11^7) =

[(12^11)(12x11 + 1)][(11^7)(11x10 + 1)] =

[(12^11)x(11^7)](12x11 + 1)(11x10 + 1) =

[(12^11)x(11^7)](133 x 111) =

[(12^11)x(11^7)](133 x 111) =

[(12^11)x(11^7)](14763) =

[(12^11)x(11^7)](3x7x19x37)

From here, it is clear that the given number is divisible by 3, 7, 19 and 37.

6 0
3 years ago
A car can travel 3/4 of a mile in 1/30 of an hour. What is the car’s speed in miles per hour?
IceJOKER [234]

Answer:

3.0 Miles per hour

Step-by-step explanation:

https://www.countcalculate.com/cars-and-speed/average-speed/result?r=jfqffaktat

3 0
3 years ago
at the convince store, 24 pack of water bottles are selling for $3.99 for 1 pack, or $9.99 for 3 packs. hiw much money per pack
Fantom [35]

Answer:

you would save .66 per pack so .66×3=1.98

Step-by-step explanation:

9.99÷3=3.33, 3.99-3.33=.66

7 0
2 years ago
The difference of a number and 6 is -11. What is the number?
Citrus2011 [14]

Answer:

The number is 17

Step-by-step explanation:

8 0
3 years ago
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The National Aeronautics and Space Administration (NASA) purchased a new solar-powered battery guaranteed to have a failure rate
Reptile [31]

Answer:

The probability that all three batteries would fail is given as:

= 0.000125

Step-by-step explanation:

Given that the probability of the new battery failing = 1/20 or 0.05,

Therefore, the probability that all three batteries would fail is given as:

= Probability of battery A failing * Probability of battery B failing * Probability of battery C failing

= P(A)*P(B)*P(C)

= 0.05 * 0.05 * 0.05

= 0.000125

5 0
3 years ago
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