Answer:
8
Step-by-step explanation:
if we take the 2 that is in the R.H.S and put it in L.H.S
it becomes 16÷2=8
9x +1= 0
9x/9 +1-1=0
X= 9-1
X= 8
Answer:
(25.732,30.868)
Step-by-step explanation:
Given that in a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.
Since only sample std deviation is known we can use only t distribution
Std error = 

t critical for 99% two tailed 
Margin of error
Confidence interval lower bound = 
Upper bound = 
Answer:
b
Step-by-step explanation:
1kg is 1000 grams. If each orange is 100g, 10 oranges is 1000g or 1kg. The answer is B or 10 oranges.