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astra-53 [7]
3 years ago
5

Solve the equation -20=-4x-6x

Mathematics
1 answer:
IrinaK [193]3 years ago
4 0
-20=-4x-6x
4x+6x=20
10x=20
x=20:10
x=2

proof:
-20=-4×2-6×2
-20=-8-12
(-8)+(-12)=-20

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A rectangle is 5 meters longer than its width. If the length is shortened by 2 meters and width is increased by 1 meter, the are
Katarina [22]

Answer: Area = 6m²

              Smaller number = 16

              Hours = 9.6 h

Step-by-step explanation:

A rectangle is 5 meters longer than its width. If the length is shortened by 2 meters and width is increased by 1 meter, the area remains the same. Find the area of the rectangle.

1) w = x m                                2) w = x + 1 m

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workers                      hours

    16                              3

     5                               x

↑                                          ↓              inversely proportional

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x = 9.6 h

 

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