Answer: z = 
<u>Step-by-step explanation:</u>
67a(t + z) = 45z + 67
 67at + 67az = 45z + 67
<u>-67at   -45z   </u> <u>-45z   -67at </u>
  67az - 45z  =  67 - 67at
  z(67a - 45)  =  67 - 67at
 <u>÷ (67a - 45) </u>  <u>÷ (67a - 45) </u>
                  z  =  
                      =  
 
        
             
        
        
        
You would count on.
I hope i am right
        
             
        
        
        
9514 1404 393
Answer:
   7×10⁻¹ +6×10⁻² +5×10⁻³
Step-by-step explanation:
Place value in any place-value number system increases by a factor of the base for each place to the left of the "decimal" point. It is reduced by a factor of the base for each place to the right of the "decimal" point.
For base-10 numbers, the powers of 10 are -1, -2, -3, ... as you go to the right of the decimal point. Hence the number 0.765 decomposes as ...
   7×10⁻¹ +6×10⁻² +5×10⁻³
 
        
             
        
        
        
Original - 4000x 
<span>so, after 3 years we have: </span>
<span>Original - 12000 = 18000 </span>
<span>=> Original = $30,000 </span>