They are inverse operations
Hi :)
To find the tan of a number, just type the number into your calculator and press
.
, Rounded to the nearest hundredth, or 2 numbers after the decimal point, just like you asked

<em>:)</em>
Answer:
30 days
Step-by-step explanation:
3x+9=36
with 2 times 9kg and 18kg is the solution:
I:2x+y=36
II:y=x+9
if you substitute y of II into I:
3x+9=36
3x=27
x=9
-> 2 boxes with 9kg and 1 with 9+9=18 kg
2*9+18=36kg in total
so the third option/Rashid is the solution