Answer:
14y=mxc I'm I right kwkbs
$725.78
First timer. Do I need to write detailed solution?
Sin(x) = base / hypotenuse
sin(x) = 7/9
x = arcsin(7/9)
x = 51 degrees
x = 12 , y = 18 (12, 18) is the solution, intersection of the two lines.
Answer
She used 6/15 litres of oil in January
Explanation
We are given that, in January, she used 3/5 of the amount of oil she used in February.
We are also given that, she used 2/3 litres of oil in February.
Therefore, amount of oil used in January is:
3/5 • 2/3 = 6/15
She used 6/15 litres of oil in January