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Daniel [21]
2 years ago
6

3x+2y-z+5w=20 y=2z-3w z=w+1 2w=8 Solve this system.

Mathematics
2 answers:
SCORPION-xisa [38]2 years ago
8 0

Step-by-step explanation:

or , w = 8/2

or , w = 4

i think this is the answer

drek231 [11]2 years ago
6 0

Start from the last equation:

2w = 8   ⇒   w = 4

z = w + 1   ⇒   z = 4 + 1   ⇒   z = 5

y = 2z - 3w   ⇒   y = 2•5 - 3•4   ⇒   y = -2

3x + 2y - z + 5w = 20   ⇒   3x + 2•(-2) - 5 + 5•4 = 20

⇒   3x = 9   ⇒   x = 3

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Perpendicular to y=-3x+11 and goes through the point (-9,-6)<br> please help it’s due next period
mafiozo [28]

Answer:

y = 1/3x - 3

Step-by-step explanation:

If the line is perpendicular to y = -3x + 11, it means that the two gradients multiply to make -1.

So the gradient of the perpendicular line is 1/3 (-3 × 1/3 = -1)

y = 1/3x + c

Next, substitute x = -9, and y = -6 to find the y intercept, or c:

-6 = 1/3(-9) + c

-6 = -3 + c

c = -6 + 3

c = -3

The equation of the line is y = 1/3x - 3

3 0
2 years ago
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slava [35]
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3 years ago
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AlladinOne [14]

Answer:

75cents for the fudge while the bubble gum are .50 cents

Step-by-step explanation:

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3 years ago
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s344n2d4d5 [400]

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asambeis [7]

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