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AlexFokin [52]
3 years ago
14

What is nine plus 12

Mathematics
2 answers:
Rom4ik [11]3 years ago
8 0

Answer:

21

Step-by-step explanation:

9 + 12 = 21

lbvjy [14]3 years ago
4 0

Answer:

21

Step-by-step explanation:

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Hmmm. 20 or 30 so the teacher will count the rest,if a student guessed, wrong or right
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In a study of cell phone use and brain hemispheric​ dominance, an Internet survey was​ e-mailed to 2455 subjects randomly select
Genrish500 [490]

Answer: 0.355,0.405)

Step-by-step explanation:

Given : Significance level : \alpha=1-0.99=0.01

Number of subjects (n) = 2455

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The probability of surveys get return will be :-

p=\dfrac{931}{2455}=0.379226069246\approx0.38

The confidence interval for proportion is given by :-

p\pm z_{\alpha/2}\times\sqrt{\dfrac{p(1-p)}{n}}

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5 0
3 years ago
Which algebraic expression represents the phrase “two times the quantity of a number minus 12”?
Bad White [126]
<span>Hey there, Lets solve this step by step. 
</span>
<span>"Two times the quantity of a number minus 12”

</span><span>Two times the quantity = 2 * n 
</span>
<span>number minus 12 = n - 12 
</span>
Therefore 

2n-12 

8 0
3 years ago
Read 2 more answers
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Answer:

See below ↓

Step-by-step explanation:

The relation is :

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As it constantly varies with a value of x and they are not isolated data points, they should be connected with a line.

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Here u go :) hope it helps

8 0
3 years ago
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