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MrRa [10]
3 years ago
5

Someone help. Please.

Mathematics
1 answer:
Elena-2011 [213]3 years ago
7 0
The number is 2 and if u are not sure how to do this go to this website mathisfun.com
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Is 225/15/3 equal to 225/(15/3)?
Andrej [43]
No, because if they were equal the second equation should be 225/(15x3), not (15/3). 
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3 years ago
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Which of the following is a radical equation?<br> X+ V5 = 12<br> x² = 16<br> 3+ x^7=13<br> 7-14
MrRissso [65]
The second one is the correct answer
5 0
3 years ago
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
If (a, –5) is a solution to the equation 3a = –2b – 7, what is a?
sukhopar [10]

Answer:

d)  1

Step-by-step explanation:

3a = –2b – 7

We have the point (a, -5) so b = -5

Substituting in

3a = -2(-5) -7

3a = 10-7

3a = 3

Divide each side by 3

3a/3 = 3/3

a =1

6 0
3 years ago
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hram777 [196]

Answer:

it is -79 + 41 = 9 i tried please give me brainlest

Step-by-step explanation:

3 0
3 years ago
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