Answer:
I think it is $54.15 sorry if wrong
4.2x - 1.4y = 2.1 |multiply both sides by 10
42x - 14y = 21 |subtract 42x from both sides
-14y = 21 - 42x |change signs
14y = 42x - 21 |divide both sides by 14
y = 3x - 1.5
Alright, lets get started.
Height of the bin = 4 ft
Length of the bin = 9 ft
Width of the bin = 11 ft
Volume of the bin = 
Volume V 
Volume V
cubic feet
6 books fiils 1 cubic feet
or
1 cubic feet is filled by = 6 books
So, 396 cubic feet is filles by 
So, 396 cubic feet is filles by
books
It means 2376 books will fit in the storage bin. : Answer
Hope it will help :)
38.50 = 100%
31.57 = ?
Multiply: 31.57 x 100 = 3,157
Divide: 3,157 ÷ 38.50 = 82%
100-82= 18% discount
Answer:
No
Step-by-step explanation:
If the lines are perpendicular then they will be the negative reciprocals of each other.
Calculate the slope using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = P(- 8, - 10) and (x₂, y₂ ) = Q(- 5, - 12)
=
= - 
Repeat the process with
(x₁, y₁ ) = R(9, - 6) and (x₂, y₂ ) = S(17, - 5)
=
= 
The slopes are not the negative reciprocal of each other, thus they are not perpendicular.