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Ierofanga [76]
3 years ago
12

Enter an equation for the word sentence. Use the variable c for the cost.

Mathematics
2 answers:
sveta [45]3 years ago
7 0

Answer

3x6=18 or 3c=18

Step-by-step explanation:

I don't know in what level of mathematics you're in. It depends...

c= cost  c=6

Andre45 [30]3 years ago
3 0

Answer:

3c=18

Step-by-step explanation:

3c=18

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Several years​ ago, 43​% of parents who had children in grades​ K-12 were satisfied with the quality of education the students r
Ne4ueva [31]
<h2><u>Answer with explanation</u>:</h2>

Let p be the population proportion of parents who had children in grades​ K-12 were satisfied with the quality of education the students receive.

Set of hypothesis :

H_0: p=0.43\\\\ H_a:p\neq0.43

Confidence interval for population proportion is given by :-

\hat{p}\pm z_c\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}} , where

n= sample size

\hat{p}= sample proportion

and z_c is the two-tailed z-value for confidence level (c).

As per given ,

Sample size of parents : n= 1085

Number of parents indicated that they were satisfied= 466

Sample proportion :  \hat{p}=\dfrac{466}{1085}\approx0.429

Critical value for 90​% confidence interval : z_c=1.645  ( by z-value table)

Now, the  90​% confidence interval :

0.429\pm (1.645)\sqrt{\dfrac{0.429(1-0.429)}{1085}}\\\\=0.429\pm 0.0247\\\\=(0.429-0.0247,\ 0.429+0.0247)\\\\=(0.4043,\ 0.4537)

Thus , the 90​% confidence interval: (0.4043, 0.4537).

Since 0.43 lies in 90​% confidence interval , it means we do not  have enough evidence to reject the null hypothesis .

i.e. We are have no evidence that parents' attitudes toward the quality of education have changed.

3 0
3 years ago
Y = mx + b
Yuki888 [10]
The last option, the y-intercept.
5 0
3 years ago
14
Step2247 [10]

Answer:

B

Step-by-step explanation:

She needed to subtract 36 from both sides of the equation, instead she added 36 to the right side.

4 0
3 years ago
Read 2 more answers
Select the correct answer.
marusya05 [52]
Well i havent read the story but from context clues id say its B
6 0
1 year ago
PLEASE HELP FOR BRAINLIEST! :)
elena-s [515]

Give that man a brainliest

8 0
3 years ago
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