-2x^2-4x=0
you just move the -5 to the right and get 5 and you cant subtract 4x from -2x^2
Add 24 to both sides<span><span>x≥9+24</span>Simplify <span>9+24</span><span> to </span><span>33
</span><span><span>x≥33</span><span>
</span></span></span>
Answer:

And the value for n rounded up would be n = 174
Step-by-step explanation:
We have the following info given:
previous estimation for the deviation
the margin of error desired
represent the confidence
The Margin of error is given by:

If we solve for the value of n we got:

For this problem we know that the confidence is 98% so then the significance level would be
and the critical value would be:

And replacing we got:

And the value for n rounded up would be n = 174
4/7 and 10/17.5
18/8 and 9/4
Proportions
2/3 and 9/12
3/8 and 6/141
7/5 and 27/20
Not a proportion