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Inga [223]
3 years ago
5

My brother needs help with this question What Shape has 12 sides and 12 angles?

Mathematics
2 answers:
zalisa [80]3 years ago
3 0
The answer is Dodecagon
gavmur [86]3 years ago
3 0

Answer:

A dodecagon.

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X+8=-2<br><br> O A. x= 10<br> OB. x=-6<br> O C. x=6<br> OD. x= -10
MaRussiya [10]

Answer: option D

Step-by-step explanation:

X+8=-2

    x= -2-8 (you should make x the subject so you switch the +8 to the other

    x= -10                                                                   side which becomes -8)    

so you get -10 because, if both the numbers have the minus sign then you should add the two values which will be a negative answer. So your answer is option D  

5 0
2 years ago
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The popping-times of the kernels in a certain brand of microwave popcorn are
Lynna [10]

Answer:

The z-score for this kernel is -2.3

Step-by-step explanation:

* Lets revise how to find the z-score

- The rule the z-score is z = (x - μ)/σ , where

# x is the score

# μ is the mean

# σ is the standard deviation

* Lets solve the problem

- The popping-times of the kernels in a certain brand of microwave

  popcorn are  normally distributed

- The mean is 150 seconds

- The standard deviation is 10 seconds

- The first kernel pops is 127 seconds

- We want to find the z-score for this kernel

∵ z-score = (x - μ)/σ

∵ x = 127

∵ μ = 150

∵ σ = 10

∴ z-score = (127 - 150)/10 = -23/10 = -2.3

* The z-score for this kernel is -2.3

7 0
3 years ago
Read 2 more answers
At 1:00 PM, you have 24 megabytes of a movie. at 1:15 P.M., you have 96 megabytes. What is the download rate in megabytes per mi
sladkih [1.3K]
Megabyte difference = 96 - 24 = 72
time difference = 1:15 - 1:10 = 15 min.

Download rate would be: 72 / 15 = 4.8

So, Your Answer would be 4.8 mb/min

Hope this helps!
7 0
3 years ago
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(3n + 8n^ + 8n2) – (8n4 – 4n2 – 7)
Amanda [17]

Answer:

- 8n^{4}  + 12n^{2}  + 11n + 7

6 0
3 years ago
Simplify 10x-4-2x+19
borishaifa [10]
8x - 23 because you answer them until you have it all simplified
7 0
3 years ago
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