Answer:
r = 50 degrees.
Step-by-step explanation:
r = 50 degrees ( vertical angles are congruent).
I hope this helps you
?.12%=72
?.12=72.100
?=6.100
?=600
Answer:
Step-by-step explanation:
Given that a survey was conducted that asked 1004 people how many books they had read in the past year.
Results are:
x bar =12.5
s = 16.6
n = 1004
Std error of sample = 
Since population std dev is not known t critical value can be used for confidence interval.
df = 1004-1 =1003
t critical = 1.96
Margin of error 
Confidence interval lower bound 
Upper bound
Answer:
C.
Step-by-step explanation:
Cross multiply or just multiply both sides by 24
24x/6=36
4x=36
divide both sides by 4
x=9