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2 years ago

15

X + 2(y-6) = 0

1 answer:

Karo-lina-s [1.5K]2 years ago

5 0

2x - z = 4
6x - 5z = 18
3z - 2w = -18
If u want me to solve them it’s
1. X = -2y + 12
2. x = 10 - 4/3y | for y, y = 15/2 - 3/4x
3. x = 2+ 1/2z | for z , z = -4 + 2x
4. x = 3 + 5/6z | for z , z = - 18/5 + 6/5x
5. W = -3/2x + 13/2 | for x , x = -2/3w + 13/3
6. x = -5w + 13 | w = -1/5x + 13/5

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3 years ago

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1 year ago

Now there is a square city of unknown size with a gate at the center of each side. There is a tree 20 b from the north gate. Tha

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Answer:

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Step-by-step explanation:

Given

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See attachment for illustration

Required

Find x

To do this, we have:

$\triangle ADE \sim \triangle ACB$ --- similar triangles

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$AE:DE = AB:CB$

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Substitute these in the above equation

$20:x/2 = 20 + x + 14: 1775$

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Cross multiply

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Open bracket

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Expand

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Factorize

$x(x + 284) -250(x + 284)= 0$

Factor out x + 284

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Split

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$x = 250$

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