Answer:
Step-by-step explanation:
Let
Differentiating y with respect to x
where a and b are constants
Answer:
108
Step-by-step explanation:
All you need to do in area is just multiply them together. If that was what you were looking for. Or 6x8=48
10x4=40
5x4=20
48+40+20=108 for a different way.
- Ravi earns per month=Rs4300
- Spends=80%
Saving percentage=100-80=20%
Saving amount:-
<h3>saving per year=Saving per month×12</h3>
Answer:
a) $420 b) $399
Step-by-step explanation:
a) $600 = 100%
$60 = 10%
$60 times 3 gives 30% = $180
$600 - $180 = $420
b) $420 = 100%
$42 = 10%
$21 = 5%
this means, they profitted by $21.
so $420 - $21 = $399
therefore, $399 is the cost price
(-3, 1)
4x-9y=-21
+-4x-3y=9
-12y= -12
y=1
4x- 9(1)= -21
4x-9=-21
+9 +9
4x= -12
x=-3
