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AfilCa [17]
3 years ago
7

5.Solve:

Mathematics
1 answer:
lara31 [8.8K]3 years ago
8 0

Answer:

C) x=2 y=-1 z=3

Step-by-step explanation:

2x + y - z = 0

2(2) + (-1) - (3) = 0

0 = 0

x - y + z =6

2 - (-1) + 3 = 6

6 = 6

x + 2y + z = 3

2 + 2(-1) + 3 = 3

3 = 3

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3 years ago
How many solutins exist for the given equation3(x-2)=22-x
Verizon [17]

Answer:

x =  8

Step-by-step explanation:

3 (x-2) = 22 – x

⇔3x -6 = 22 –x

⇔3x + x = 22 + 6

⇔4x = 32

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3 0
3 years ago
What is 3x + 77 = 4x + 54
loris [4]

Answer:

Simplifying

3x + 77 = 4x + 54

Reorder the terms:

77 + 3x = 4x + 54

Reorder the terms:

77 + 3x = 54 + 4x

Solving

77 + 3x = 54 + 4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4x' to each side of the equation.

77 + 3x + -4x = 54 + 4x + -4x

Combine like terms: 3x + -4x = -1x

77 + -1x = 54 + 4x + -4x

Combine like terms: 4x + -4x = 0

77 + -1x = 54 + 0

77 + -1x = 54

Add '-77' to each side of the equation.

77 + -77 + -1x = 54 + -77

Combine like terms: 77 + -77 = 0

0 + -1x = 54 + -77

-1x = 54 + -77

Combine like terms: 54 + -77 = -23

-1x = -23

Divide each side by '-1'.

x = 23

Simplifying

x = 23

Step-by-step explanation:

I hope its helps

8 0
3 years ago
Read 2 more answers
Find a line perpendicular to – 5 x – 4 y = 19 that passes through ( – 5 , 11 )
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Solve  <span>– 5 x – 4 y = 19   for y to obtain the slope:  -5x - 19 = 4y, and so
the slope is (-5/4).

A line perpendicular to </span><span>– 5 x – 4 y = 19  must have a slope which is the negative reciprocal of this (-5/4).  That would be (+4/5).

Using the point-slope form of the eqn of a str line:

y-11 = (4/5)(x-[-5]), or   (4/5)(x+5).  This could, of course, be written in other (but equivalent) forms.

</span>
3 0
3 years ago
What is 1 over 2 mean?
Debora [2.8K]

Answer:

One out of two, or half.

3 0
4 years ago
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