Answer:
Part A: See detail below.
Part B: Company B charges less than company A for 8 windows.
Part C: The saving using company B for 6 windows is $3.
Step-by-step explanation:
Part A:
Company A: (total charges) = ($6)x(N number of windows)+($12)
Company B: (total charges) = ($5)x(N number of windows)+($15)
Part B:
Company A for 8 windows: 6*8+12=$60
Company B for 8 windows: 5*8+15=$55
Part C:
(Saving) = (6*6+12)-(6*5+15)=48-45= $3
Answer:
The length of the rectangle (l) = 3 feet
The width of the rectangle (W) = 10 feet
Step-by-step explanation:
<u><em>Step(i):-</em></u>
<em>Given that the width of the rectangle = (x+1) feet</em>
<em>Given that the length of the rectangle = ( x-6) feet</em>
<em>The area of the rectangle = 30 square feet</em>
<u><em>Step(ii):-</em></u>
We know that the area of the rectangle
= length ×width
30 = ( x+1)(x-6)
30 = x² - 6x + x -6
⇒ x² - 5 x - 6 = 30
⇒ x² - 5 x - 6 - 30 =0
⇒ x² - 5 x - 36 =0
x² - 9 x +4x - 36 =0
x (x-9) +4 ( x-9) =0
( x+4 ) ( x-9) =0
( x+4 ) =0 and ( x-9) =0
x =-4 and x =9
<u><em>Step(iii):-</em></u>
we have to choose x =9
The length of the rectangle (l) = x-6 = 9-6 =3
The width of the rectangle (W) = x+1 = 9 +1 = 10
<u><em>Final answer:-</em></u>
The length of the rectangle (l) = 3 feet
The width of the rectangle (W) = 10 feet
Answer:
5
Step-by-step explanation:
Im pretty sure its
2ab + 2bc + 2ac
