Answer:
Step-by-step explanation:
The first is 
<em>The second is </em>
So 
{Simple Subtraction}
<em>I hope this helps you</em>
<em>:)</em>
Answer: 5/16
Step-by-step explanation:
Answer:
(230.21 ; 233.13)
Step-by-step explanation:
Given the data :
230.66, 233.05, 232.58, 229.48, 232.58
To calculate the 90% CI
WE obtain the mean and standard deviation of the sample data :
Mean of sample, ΣX /n = 1158.35/5 = 231.67
The standard deviation of the sample, s = 1.531 (Using calculator).
(The 90% Tcritical value, 2 sided, df = 4) = 2.132
The confidence interval, CI :
Mean ± Tcritical * s/√n
C.I = 231.67 ± (2.132 * (1.531/√5)
C. I = 231.67 ± 1.4597
(231.67 - 1.4597) ; (231.67 + 1.4597)
(230.21 ; 233.13)
The angles are congruent (equal)
8x + 6 = 4x + 38
4x + 6 = 38
4x = 32
x = 8
∠B = 4(8) + 38 = 70°
