Remark
You need to start with three facts.
x and y are complements which means that x + y = 90
Sin(x) = cos(90 - x)
<CPN = <DPN Definition of a bisector.
From the 3 facts above, we can gather than
CPN + y = 90
Therefore the cos of CPN = Sin(y)
Replace x with 5, and evaluate the expression.
Remember to follow the correct order of operations.
100 - 15x =
= 100 - 15 * 5
= 100 - 75
= 25
=8(a+2) that’s the answer I think
Answer:
0.142
Step-by-step explanation:
From the question, we identify the following parameters;
n = 49
p = 82% = 82/100 = 0.82
alpha, α = 1-0.99 = 0.01
Zα/2 = Z_0.005 = 2.575
margin of error = Zα/2 * √( p(1-p)/n)
Margin of error = 2.575 * √(0.82)(1-0.82)/49
Margin of error =0.1416005 which is approximately 0.142
Answer:
Step-by-step explanation:
Use the identity 
where 
and 
.
This results in 
From the unit circle we know that 
and 
Substitute
Simplify
