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liubo4ka [24]
2 years ago
8

Solve the system by elimination

Mathematics
1 answer:
UkoKoshka [18]2 years ago
8 0

9514 1404 393

Answer:

  one solution: (x, y) = (-8, -7)

Step-by-step explanation:

We can add 6 times the first equation to the second equation in order to eliminate y.

  6(x -y) +(4x +6y) = 6(-1) +(-74)

  10x = -80

  x = -8

  y = x+1 = -7 . . . . . solve the first equation for y; substitute x

The one solution is (x, y) = (-8, -7).

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110.5 yd²

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Separate the figure into 1 triangle and 3 rectangles.

(see attached image)

<u>Area 1</u>

Area of a triangle = 1/2 × base × height

                             = 1/2 × (7 + 2 + 2) × 7

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<u>Area 2</u>

Area of a rectangle = width × length

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<u>Area 3</u>

Area of a rectangle = width × length

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<u>Total Area</u>

Area 1 + Area 2 + Area 3 + Area 2 = 38.5 + 27 + 35 + 10

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Answer:

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Step-by-step explanation:

A = bh

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