Answer:
for angle H ,
hypotenuse = gh( √77)
adjacent side= ih( √35)
perpendicular=gi( √42)
then
we know
secant=hypotenuse /adjacent
=√77/√35
1. 25% if 1/4, so we want to find 1/4 of 176. Best way to get the result is just divide 176 by 4, so 176:4=44 - its the answer.
2. To get the answer we can use proportion
100% -----------20
90% ---------- x
crossmultiply now
100x=90*20
100x=1800 /:100 divide both sides by 100
x=18 - its the answer
3. Similar problem
24 ---------- x
30 ---------- 100%
crossmultiply now
24*100%=30x
2400%=30x /:30 divide both sides by 30
2400%:30=x
80%=x - its the answer
Answer:
B is the correct answer...thanks!!!
Answer:
The sample size is 
Step-by-step explanation:
From the question we are told that
The population proportion is 
The margin of error is 
Given that the confidence level is 90%
Then the level of significance can be mathematically represented as



Next we obtain the level of significance from the normal distribution table the value is

Generally the sample size is mathematically represented as
![n = [ \frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * p(1- p )](https://tex.z-dn.net/?f=n%20%20%3D%20%5B%20%5Cfrac%7BZ_%7B%5Cfrac%7B%5Calpha%20%7D%7B2%7D%20%7D%7D%7BE%7D%20%5D%5E2%20%2A%20%20p%281-%20p%20%29)
substituting values
![n = [ \frac{1.645 }{0.04} ]^2 * 0.45(1- 0.45 )](https://tex.z-dn.net/?f=n%20%20%3D%20%5B%20%5Cfrac%7B1.645%20%7D%7B0.04%7D%20%5D%5E2%20%2A%20%200.45%281-%200.45%20%29)
