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Solnce55 [7]
3 years ago
5

What is 4 and 1/4 -1 and 3/4

Mathematics
1 answer:
Sergio039 [100]3 years ago
8 0

Answer:

youre answer is:

2.5

hope this helps

Brainliest plz :)

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A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviati
Alona [7]

Answer:

2.87%

Step-by-step explanation:

We have the following information:

mean (m) = 200

standard deviation (sd) = 50

sample size = n = 40

the probability that their mean is above 21.5 is determined as follows:

P (x> 21.5) = P [(x - m) / (sd / n ^ (1/2))> (21.5 - 200) / (50/40 ^ (1/2))]

P (x> 21.5) = P (z> -22.57)

this value is very strange, therefore I suggest that it is not 21.5 but 215, therefore it would be:

P (x> 215) = P [(x - m) / (sd / n ^ (1/2))> (215 - 200) / (50/40 ^ (1/2))]

P (x> 215) = P (z> 1.897)

P (x> 215) = 1 - P (z <1.897)

We look for this value in the attached table of z and we have to:

P (x> 215) = 1 - 0.9713 (attached table)

P (x> 215) =.0287

Therefore the probability is approximately 2.87%

4 0
3 years ago
Distance between 2 airports 1,505 miles. Average speed of airplane 420 mph. Flight time hours
-BARSIC- [3]
For this case we have the following definition:
 d = v * t
 Where,
 d: distance
 v: speed
 t: time
 Clearing the time we have:
 t = d / v
 Substituting values:
 t = 1505/420
 t = 3,583 hours
 Answer:
 
Flight time hours:
 
t = 3,583 hours
6 0
3 years ago
Find the four geometric means between 486 and 2
melamori03 [73]

Answer:

486, 486r,486r^2,486r^3,486r^4,2

------------------------------------  

2 = 486r^5

-----

r^5= 1/243

----

r = 1/3

---

------

Ans: 486*(1/3),486*(1/9),486(1/27),486(1/81)

-----

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I need help with Geometry
Trava [24]
The third one. The two angles don't necessarily have to be equal
6 0
3 years ago
What is 66 2/3% of 22?
OleMash [197]
66 2/3% of 22= 14.6666667 is the answer.
3 0
3 years ago
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