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Black_prince [1.1K]
3 years ago
14

The additive inverse of * WARNING : NON SENSE ANSWER REPORT TO MODERATOR ​

Mathematics
2 answers:
Fantom [35]3 years ago
6 0

Step-by-step explanation:

(-8/5)=-(8/5)

=8/5. ×4/7

Black_prince [1.1K]3 years ago
4 0

Answer:

-8/5×-7/4 is your answerrrrrrrrrrr

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I need help with an area math question
Ede4ka [16]

Answer:

Step-by-step explanation:

Area of outer triangle = \dfrac{4x*(4x+3)}{2}= 2x*(4x +3)

                                    = 2x*4x + 2x*3

                                   = 8x² + 6x

Area of inner triangle= \dfrac{2x*(2x+5)}{2}=x*(2x+5)=x*2x+x*5=2x^{2} + 5x

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

7 0
3 years ago
How do we add linear expressions?
Svetlanka [38]
Y=mx+b
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3 years ago
The diagram shows a circle inside a square.<br> 16 cm<br> Work out the area of the circle.
miskamm [114]

Answer:

200.96cm^2

Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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