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REY [17]
3 years ago
13

A circle's radius is 25 inches.

Mathematics
2 answers:
Stella [2.4K]3 years ago
5 0

Answer:

C≈157.08in

Step-by-step explanation:

C=2πr=2·π·25≈157.07963in

Alina [70]3 years ago
5 0
2•pi•25
Answer: 157.1
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Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round y
tino4ka555 [31]

Answer:

0.8762 or 87.62%

Step-by-step explanation:

Since our mean is μ=14.3 and our standard deviation is σ=3.7.  If we're trying to figure out what percentage is P(10 ≤ x ≤ 26) equal to we must first calculate our z values as such:

z=\frac{x-\mu}{\sigma}

Our x value ranges from 10 to 26 therefore let x=10 and we obtain:

z=\frac{10-14.3}{3.7} =-1.16\\

If we look at our z-table we find that the probability associated with a z value of -1.16 is 0.1230 meaning 12.30%.

Now let's calculate the z value when x = 26 and so:

z=\frac{26-14.3}{3.7}=3.16\\

Similarly, we use the z-table again and find that the probability associated with a z value of 3.16 is 0.9992 meaning 99.92%.

Now we want to find the probability in between 10 and 26 so we will now subtract the upper limit minus the lower limit in P(10 ≤ x ≤ 26) therefore:

0.9992 - 0.1230 = 0.8762

or 87.62%

7 0
3 years ago
.
raketka [301]

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bit.^{}ly/3a8Nt8n

5 0
3 years ago
Find the solutions of the quadratic equation 3x^2 + 9x + 17 = 0
kirill115 [55]

Answer:

x=  

6

9−  

285

​  

 

​  

=  

2

3

​  

−  

6

1

​  

 

285

​  

=−1.314

x=  

6

9+  

285

​  

 

​  

=  

2

3

​  

+  

6

1

​  

 

285

​  

=4.314

Step-by-step explanation:

8 0
3 years ago
22,338 rounded to the nearest hundred
kogti [31]
22300 because the tenths place is below five
8 0
3 years ago
Read 2 more answers
F r e e p o i n t s b o o ​
Katyanochek1 [597]

Answer:

Thank you lol. I am so bored right now.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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