mildredelizam
22.11.2019 •
Mathematics
Use the midpoint formula to estimate the quantity of electricity
used the second week, given the quantity used in the first
week and the third week. assume that the quantity of water
always follows a linear pattern. (round to nearest whole
number)
week
quantity (in kwh)
first
third
15
kwh
Solved
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Ответ:
Step-by-step explanation:
Let the cost is x, we have then:
1.2x*(0.87) = x + 1980(1.2*0.87 - 1)x = 19800.044x = 1980x = 1980/0.044x = 45000Cost is 45000, then SP is:
SP = 45000 + 1980 = 46980