I can help with certain parts but not every thing that is taught
well if you are looking to find x than you would add t to each side ,so it would be 4x=a+t. Next you would divide x by 4 so what you do to one side you do the other so the final answer is x=<u> a+t </u>
4
I hoped this helped it assuming it meant to find x, if it didn't im sorry i tried my best
Answer:
is 53
heart if it helped brain if im cooll
Answer:
(b)
We can use an estimatior for the population proportion as 
since we don't know previous info. And replacing into equation (b) the values from part a we got:
And rounded up we have that n=1068
Step-by-step explanation:
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since the confidence level is 99%, our significance level would be given by 
and 
. And the critical value would be given by:
The margin of error for the proportion interval is given by this formula:
(a)
And on this case we have that 
and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
We can use an estimatior for the population proportion as since we don't know previous info. And replacing into equation (b) the values from part a we got:
And rounded up we have that n=1068
