-x + y = -13 → -3x + 3y = -39
-4x + 3y = -51 → -4x + 3y = -51
x = 12
-x + y = -13
-(12) + y = -13
-12 + y = -13
+ 12 + 12
y = -1
(x, y) = (12, -1)
Answer:
It's a property of log() or ln() functions. It's states:

in other word, subtraction of log functions could be combined to a quotient in the log function.
Yes she should because it might be too small to have a effect on her thus it will not work
Given :
- Area of square equals to the area of rectangle of sides 4.9m and 1.6m .
To find :-
Solution :-
<u>As </u><u>we</u><u> know</u><u> </u><u>,</u>
- Area = side²
- 4.9 * 1.6 = a²
- a = √ 49/10 * 16/10
- a = 7/10 * 4/10
- a = 28/100
- a = 0.28 m
as it is a markup, you multiple the cost by 1.12 (the 1 shows that the cost is increasing). the new cost is 8.9488 or $89.95 if you round.