Answer:
22
Step-by-step explanation:
90*x = 70
x = 7/9
x = 78%
100-78 = 22
Answer:
-6
Step-by-step explanation:
The pattern here is that you substract 15 every time you move a number (left to right) , therefore: 9-15 = -6
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)
Answer:
($) 60 is the profit per item when the selling price is reduced by 20%
Step-by-step explanation: 20% of 700 is 140.
The original profit is 700 - 500 = 200. The selling price is 140 less, Subtract 140 from 200. That leaves a profit of 60. (Not necessarily dollars, as the currency was not given in the question.)
Answer:a
Step-by-step explanation:
Answer:
The temperature of the chemical solution after t hours is 
Step-by-step explanation:
Given that the initial temperature of the chemical solution, 
.
The rate of decreasing temperature, 
So, after t hours, the temperature of the chemical solution will decrease by 
.
So, the temperature of the chemical solution after t hours,
Hence, the temperature of the chemical solution after t hours is 
.
