Answer: She's wrong.
Step-by-step explanation:
Numbers of hours used in solving homework last week = 15
Numbers of hours used in solving homework this week = 18
Percentage increase = (18 - 15) / 15 × 100
= 3/15 × 100
= 1/5 × 100
= 20%
Since Maxie said that she spent 120% more time doing homework this week, she's wrong. She only spent 20% more. 
 
        
             
        
        
        
H will equal 4 I hope this helps.
        
                    
             
        
        
        
Answer:
AB = 41 cm
Step-by-step explanation:
If B is the midpoint of AC, then B splits AC into 2 equal halves: AB & BC. 
Therefore, AB = ½ of AC.
Given, AC = 82 cm.
So,
AB = ½ × AC
AB = 82/2
AB = 41 cm
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Hope it helps ⚜ 
 
        
             
        
        
        
Answer:
It depends on your career but the important types are counting, addition, subtraction, multiplication and division. 
 
        
             
        
        
        
Answer:
See below.
Step-by-step explanation:
We know that 
                               tanA + tan B
tan (A + B)     =     ---------------------                       
                                1 - tanAtanB
Substituting for A + B
tan (A + B) = tan pi/4 = 1.
             tanA + tan B 
So        ------------------   =    1
              1 - tanAtanB 
Therefore   tanA + tan B =   1 - tanAtanB.