thisusernameistaken2
26.08.2021 •
Mathematics
a wireless charger you use a coupon for 15% off your total purchase you pay a total of $45.22 after using the coupon the original price of the charger is $15.64 what is the original price of the device tracker
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Ответ:
k = 3
Step-by-step explanation:
Given that b varies jointly with c and d and inversely with f then the equation relating them is
b =
← k is the constant of variation
To find k use the condition c = 4, d = 9, f = 6 , b = 18, then
18 =
= 
= 6k ( divide both sides by 6 )
3 = k