Answer:
1.8
Step-by-step explanation:
Solve for x
90
x
=
81
+
25
x
2
Subtract 
25
x
2
 from both sides of the equation.
90
x
−
25
x
2
=
81
Subtract 
81
 from both sides of the equation.
90
x
−
25
x
2
−
81
=
0
Factor the left side of the equation.
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−
(
5
x
−
9
)
2
=
0
Multiply each term in 
−
(
5
x
−
9
)
2
=
0
 by 
−
1
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(
5
x
−
9
)
2
=
0
Set the 
5
x
−
9
 equal to 
0
.
5
x
−
9
=
0
Solve for 
x
.
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x
=
9
5
The result can be shown in multiple forms.
Exact Form:
x
=
9
5
Decimal Form:
x
=
1.8
Mixed Number Form:
x
=
1
4
5
Upgrade to
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
4x+3=x+9
4x-x=9-3
3x=6
x=6/3
x=2
 
        
                    
             
        
        
        
Answer: y=2x-3
Step-by-step explanation:
It will cross the y axis at -3 and the x axis at 3/2
 
        
             
        
        
        
Answer:
35 miles per gallon.
Step-by-step explanation:
We need to simplify 175/5 into 35/1 to make it into a unit rate. So, 35 miles per gallon is the answer. 
 
        
             
        
        
        
Answer:
 {-5, -4, 0, 1, 2}
Step-by-step explanation:
The domain is the inputs or the x values
 {-5, -4, 0, 1, 2}