<u><em>Hi there! </em></u>
<u><em>Answer:</em></u>
<u><em>X>1</em></u>
<u><em>*The answer must have a positive sign and greater than symbol.*</em></u>
Step-by-step explanation:
First, you subtract by 3 from both sides of an equation.
Then, you subtract by the numbers from left to right.
You can also divide by 2 from both sides of an equation.
Finally, you divide by the numbers from left to right.
<em><u>Final answer is x>1</u></em>
I hope this helps you!
Have a nice day! :)
:D
-Charlie
Thank you so much! :)
:D
The correct answer is 2x^3-40x-180
Please refer to the above attachment
121 is big enough to assume normality and not worry about the t distribution. By the 68-95-99.7 rule a 95% confidence interval includes plus or minus two standard deviations. So 95% of the cars will be in the mph range
The question is a bit vague, but it seems we're being asked for the 95% confidence interval on the average of 121 cars. The 121 is a hint of course.
The standard deviation of the average is in general the standard deviation of the individual samples divided by the square root of n:
So repeating our experiment of taking the average 121 cars over and over, we expect 95% of the averages to be in the mph range
That's probably the answer they're looking for.
