Answer:
6
x
^2
−
5
x
y
−
4
y
^2
Step-by-step explanation:
Expand  
(
2
x
+
y
)
(3
x
−
4
y
)
 using the FOIL Method.
Apply the distributive property.
2
x
(
3
x
−
4
y
)
+
y
(
3
x
−
4
y
)
Apply the distributive property.
2
x
(
3
x
)+
2
x
(−
4
y
)
+
y
(
3x
−
4
y
)
Apply the distributive property.
2
x
(
3
x
)
+
2
x(
−
4
y
)
+
y
(
3
x)
+
y
(
−4
y
)
Simplify and combine like terms.
6
x
^2
−
5
x
y
−
4^
2
 
        
                    
             
        
        
        
Answer:
Obtuse
Step-by-step explanation:

Since the hypotenuse is bigger, the triangle is obtuse
 
        
                    
             
        
        
        
Answer:
We conclude that  a researcher  used simple random sample.
Step-by-step explanation:
We know that select a sample of five children from a class of 30, a researcher puts each child’s name on a slip of paper, then shuffles the papers in a hat and randomly picks five names.  
We conclude that  a researcher  used simple random sample.
Because every children  has an equal chance of being included in the sample.
 
        
             
        
        
        
Answer:
16 days
Step-by-step explanation:
108/9 is 12. The late fee is 12¢ per day. 16x12 is 192.
 
        
             
        
        
        
Answer:
It comes with 13.8 ounces of crackers now.
Step-by-step explanation:
12 + 15% = 13.8