The unknown number . . . . .  (z)
The sum of the unknown number and 22 . . . . .  (z + 22)
The sum of the unknown number and 22
divided by the same unknown number . . . . . . .  (z + 22) / z
You said that quotient is 12.              (z + 22) / z  =  12
Multiply each side by 'z' :                  (z + 22)       =  12 z
Subtract 'z' from each side:                      22        =  11 z
Divide each side by  11 :                           2         =      z .
    
        
             
        
        
        
<span>(2d - 5)(2d - 4) = 4d^2 - 2d x 4 - 5 x 2d + 20 = 4d^2 - 18d + 20
Answer is B
Hope it helps! </span>
        
                    
             
        
        
        
Answer:
it will take 90 minutes 
Step-by-step explanation:
10 - 6 = 9
9 x 10 = 90
 
        
                    
             
        
        
        
Look up what is mean and calculate it.
 
        
             
        
        
        
first you turn the fractions into inproper fractions by multiplying the whole number by the denomonator and adding the numerator
4×4=16
16+3=19
19/4
4×7=28
28+1=29
29/7
keep the denomonators the same. now that you've converted them into inproper fractions you can multiply them
19/4 × 29/7=551/28
there is no way to simplify this answer so this is the final answer