Answer:
Step-by-step explanation:
Area of outer triangle = 
= 2x*4x + 2x*3
= 8x² + 6x
Area of inner triangle= 
Area of aluminium = area of outer triangle - area of inner triangle
= 8x² + 6x + 2x² + 5x
= 10x² + 11x
Area of 20 aluminum borders = 20*(10x² + 11x) = 200x² + 220x
b) x = 25 cm
Area of 20 aluminum borders = 200*25² + 220*25
= 200 * 625 + 220*25
= 125000 + 5500
= 130500 cm²
c) Area of inner triangle (Glass) = 5500 cm²
Cost of aluminium = 130500 * 0.06 = $ 7830
Cost of glass = 5500 * 0.03 = $ 165
Cost of making 20 windows = 7830 + 165 = $ 7995
The length is 24 and the width is 6.
I did a little guess and check here, as when I algebraically solved it, the answers did not make sense. However, the length (24) is 4 times the width (6), and 24 times 6 is 144, so it works!
I hope this helps.
1. 13.75= 0.25b +0.50
-0.50 -0.50
13.25 = 0.25b; divide both sides by 0.25 to isolate b and you get:
53 = b
2. 10w + 4w = -84
Add like terms!
14w = -84; divide both sides by 14 to isolate w and you get:
w = -6
Answer: 6.25
Step-by-step explanation:
4t = 25
=> t = 25 /4
=> t = 6.25
Step-by-step explanation:
It is not right for the sales manager of any company to anticipate the prospective candidate for promotion, until completion of the financial year. This is because, any employee can outperform other at any point in any business deal. Therefore, every employee should be subjected to performance scrutiny till the last day of the financial year. Judgement, at the beginning or mid of the year might not be a right.
