Answer:
all my answers are in the comments btw
Step-by-step explanation:
The answer:
the main rule:
for all value positive of a real b, √b²= b, and √b*c= √b * √c, if c is a real positive
let A=√25x^4, we know that 25x^4=5² * x² * x²
therefore,
√25x^4= √5² * x² * x² =√5² √x² √x² = 5* x*x= 5x²
the final answer is A=√25x^4=5x²
Answer:
95.04 pounds
122.54 US dollars
Step-by-step explanation:
I had to do the math in US dollars first then turn it into pounds.
All you do is this
136.16 * -.10 (US dollars)
13.616(US) 10.56(pounds)
Subtract 13.616 from 136.16 to get
122.544 or 122.54 (US)
95.04(pounds)
It might be a bit confusing, but the answers are up top.
Answer:
So the answer for this case would be n=2663 rounded up to the nearest integer
Step-by-step explanation:
We have the following info:
margin of error desired
the standard deviation for this case
The margin of error is given by this formula:
(a)
And on this case we have that ME =50 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
(b)
The critical value for 99% of confidence interval now can be founded using the normal distribution. The significance is . And for this case would be , replacing into formula (b) we got:
So the answer for this case would be n=2663 rounded up to the nearest integer
An equavalent ratio of 12\24 is 3\4