Answer:
33
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Mr. Chan originally placed 4,000 in the bank as a fixed deposit for 2 years.
Each years the bank added a certain amount of interest. 
At the end of the 2 years he gained 243 dollars and 60 cents just from interest. 
How to solve:
Simply take away the 4 in the amount of money
Leaving: $243.60
( 2 years )
Now divide 243.60 by 1/2
which is 121.8
Mr.Chan got 121.8 worth of interest a year
$10.5 a month
$2.3 a week 
6 cents a day
All in 2 years. 
 
        
             
        
        
        
Answer:
See below.
Step-by-step explanation:
I see there are no answer choices you've provided, but in order to interpret a confidence interval correctly, you might say something like "We are 90% confident that the true difference in the mean number of drops is contained within the interval".
 
        
             
        
        
        
Answer:

Step-by-step explanation:
we know that
The quadratic equation in standard form is equal to

we have

This is a quadratic equation in vertex form
Convert to standard form

Apply distributive property

Combine like terms
 ----> quadratic equation in standard form
 ----> quadratic equation in standard form