Answer:
20.7 ft each
Step-by-step explanation:
See the diagram attached below which describes and represents the information given to us.
The tangents are PA and PB.
Tangents form right angle with the radius of a circle, therefore:
<OBP = <OAP = 90°
Therefore ∆OBP is a right triangle.
m<APO = m<BPO = ½(60) = 30°
Thus, in ∆OBP,
Reference angle = 30°
Side length opposite to reference angle = 12 ft
Adjacent length = length of tangent PB
Apply trigonometric function TOA, to find PB:
Tan 30 = Opp/Adj
Tan 30 = 12/PB
PB × Tan 30 = 12
PB = 12/Tan 30
PB = 20.7846097 ≈ 20.7 ft (nearest tenth)
Length of each segment = 20.7 ft
I believe 43 is the answer
Answer:
The 90% confidence interval is 
Step-by-step explanation:
From the question we are told that
The sample size is n = 64
The sample mean is 
The standard deviation is 
Given that the confidence interval is 90% then the level of significance is mathematically evaluated as


Next we obtain the critical value of
from the normal distribution table , the value is

Generally the margin of error is mathematically represented as

=> 
=> 
The 90% confidence interval is mathematically represented as

=> 
=> 
Step-by-step explanation:
-2.8 +2.4=-.4
-.4+7.8=7.4
7.8-2.8=5
i hope this helps ; )
Your answer would be 4x-6y-12