Ok, I am ready, what are the questions.
Tell me in the comment section
Answer:
596.34m approx
Step-by-step explanation:
Given data
Let the Starting point be x
A helicopter flew north 325 meters from x
Then flew east 500 meters
Let us apply the Pythagoras theorem to solve for the resultant which is the distance from the starting position
x^2= 325^2+500^2
x^2=105625+250000
x^2= 355625
x= √355625
x=596.34m
Hence the distance from the starting point is 596.34m approx
Answer:
D
Step-by-step explanation:
A is 4, which is rational,
B is just 1/3, which is rational,
C is -8, which is rational,
leaving D, which is 3.1415926535...
Answer:
n = 400
Step-by-step explanation:
The formula for the error in our estimate is given by:
Standard Error : √ ( p(1-p)/ n)
Error = SE = Zα/2 √ ( p(1-p)/ n) where
Zα/2= critical value for 95% confidence level = 1.96
and we know our error is 3.5 %
But we do not the sample proportion p. Then what we can do is give an estimate of p in the absence of any other information.
In this case we will use p= 0.5 which is the value that maximizes the expression for the standard error :
if p = 0.8 then SE= 0.040
p = 0.3 then SE =0.036
p = 0.1 then SE = 0.030
p = 0.5 then SE = 0.050
Substituting
3.5/100 = 1.96 x √ (( 0.5 x 0.5 ) /n )
3.5/ (100 x 1.96 x 0.5 ) = 1/ √n
0.0357 = 1 /√n
n = 20²
n = 400
Answer:
<u>6.2% of last month's income was spent on office expenses</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Office's income last month = $ 315,600
Expenses last month = $ 19,567.20
2. What percent of last month's income was spent on office expenses?
To calculate this percent, we use this fraction:
Expenses last month/Office's income last month
Replacing with the real values:
19,567.20/315,600 = 6.2%
<u>6.2% of last month's income was spent on office expenses</u>
