jasmine3051
29.01.2020 •
Mathematics
Find the annual rate of inflation (% increase) of a gallon of milk costing %2.25 last year and $2.70 this year
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Ответ:
Step-by-step explanation:
A: x = 12-4 = 8
B: x = 12/4 = 3
No wonder you asked for help. Some of the questions don't make sense!
x+3 = 9 ⇒ x=6, which doesn't match either A or B.
3·x = 9 ⇒ x=3, which matches B
9 = 3·x is the same as the previous equation, i.e., B.
3+x = 9, doesn't match either A or B.
x = 9-3, doesn't match either A or B
x = 9÷3 ⇒ x=3, which matches B
x+x+x = 9 ⇒ x=3, which matches B
I'm guessing that there is an error in tape A, and x should be 6, not 8.