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Zarrin [17]
3 years ago
8

Please, I need help with my homework. I not asking anybody to do it, but I need help for it.

Mathematics
1 answer:
jenyasd209 [6]3 years ago
4 0

Answer:

1) x = -2

Step-by-step explanation:

1) x + 7 + x + 11 = 14

 2x + 18 = 14

        2x = 14 - 18

     2x =  -4

       x = -4/2 = -2

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PLEASE HELP!!! You must show your work to receive credit for this item.
Natalka [10]
The answer to this question is 12
8 0
3 years ago
The admissions director from Big City University found that (107.8, 116.2) is a 95% confidence interval for the mean IQ score of
katen-ka-za [31]

Answer:  The explanation is correct.

Step-by-step explanation:

The interpretation of 95% confidence interval for population mean is that "A person can be 95% sure that the true population mean lies in it."

Given : The admissions director from Big City University found that (107.8, 116.2) is a 95% confidence interval for the mean IQ score of all freshmen.

Interpretation: The admissions director can be 95% sure that the true population mean IQ score of all freshmen lies in  (107.8, 116.2).

i.e. There is a 95% probability (chance) that the interval from 107.8 to 116.2 contains μ.

Hence, the  explanation is absolutely "correct" .

7 0
3 years ago
-7c+9=c+1 <br> If you could also show how you did it i would appreciate it
Step2247 [10]
-7c+9=c+1    (subtract c on both sides)
-8c+9=1    (subtract 9 on both sides)
-8c=-8     (divide by -8 on both sides to get c by its self)
c=1
your answer is 1.
5 0
3 years ago
Read 2 more answers
use the slope formula to calculate the slope of the line that contains the two points (-4,0) and (5,2)​
Solnce55 [7]

Answer:

\frac{2}{9} x

Step-by-step explanation:

To find slope using two points you need to find the difference in x and y. You use \frac{y_{2}-y_{1}}{x_{2}-x_{1} }

So, 2-0=2 and 5-(-4)=9. Therefore the slope is 2/9x

3 0
3 years ago
684303 rounded to nearest thousand
horsena [70]
684,000. This should give you the correct answer as the 4 is the thousands place. Good luck :D
3 0
3 years ago
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