Answer:
73.4846922835 = 73.5 and no it is not a perfect square 5400/100 = 54
 
        
             
        
        
        
|a| = b gives
a =b or a = -b
so,
|-x| = -10 
gives 
-x = -10 or -x = 10
x = 10, -10
now let us verify,
when x = 10, |-10| = +10 and it is not = -10
so, x= 10 is NOT a solution.
when x = -10, |-(-10)| = |10| = 10 and it is not = -10
so, x= -10 is NOT a solution. 
hence, this equation  does not have a solution.
If we know that |...| can never be negative, we can directly deduce that this equation does not have any solution.
        
                    
             
        
        
        
Answer:
To best show this information, the scale for the T-axis of his graph should go from 0 to at least 60.
To best show this information, the scale for the m-axis of his graph should go from 0 to at least 12.
Step-by-step explanation:
Mohammad will have collected T cards after m months, given that he buys 5 cards each month and he started with no cards.
The relationship describing this situation is

When  then
 then  cards.
 cards.
When  then
 then  cards.
 cards.
To best show this information, the scale for the T-axis of his graph should go from 0 to at least 60.
To best show this information, the scale for the m-axis of his graph should go from 0 to at least 12.
 
        
             
        
        
        
Answer:
65.4°
Step-by-step explanation:
According to question
The equation is
Cos(x)=5/12
x=acos(5/12)
x=65.4°
 
        
             
        
        
        
Answer:

Step-by-step explanation:
First, find the probability of him pulling out a book.
There are 11 objects in total, and there are 4 books.
So, the probability of pulling out a book is 
Next, find the probability of him pulling out a DVD after.
Since a book was taken out, there are only 10 objects left. There are 5 DVDs. 
So, the probability of pulling out a DVD is  , or simplified to
, or simplified to 
To find the probability that this happens in order, multiply the probabilities:
 x
 x 
= 
So, the probability is 