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Andrej [43]
3 years ago
11

3 math problem please show step by step

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
6 0
Number 1
- Multiply the first one by negative one so the x’s are opposites. (-5x-y=12)
- Simplify them
-5x-y=12
5x-7y=4
-8y=16
y=-2
-Fill in y to one of them to find x (x=-2)

Number 2
-Multiply the bottom one by 4 so it is opposite to the first one (-36x-4y=-120)
-Simplify
-5x+4y=-3
-36x-4y=-120
-41x=-123
x=3
-Fill x into one of the problems to find y (y=3)

Number 3
-Multiply the bottom one by -2 to make it opposite (2x-6y=-20)
-Simplify
-9x+6y=27
2x-6y=-20
-7x=7
x=-1
-Fill into one of the equations to get y (y=3)
babymother [125]3 years ago
4 0
The correct answe to tht wits is my
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Answer:

1,2 and 4 are conservatives

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Step-by-step explanation:

We calculate  the Curl F

Remember that:

        Curl F = <\frac{dFz}{dy} - \frac{dFy}{dz}, \frac{dFz}{dx} - \frac{dFx}{dz}, \frac{dFy}{dx} - \frac{dFx}{dy}>

1. Curl F = <0,0,5-5> = <0,0,0>

  The potential function f so that  ∇f=F

  f(x,y,z) = -3x^{2} +5xy + 5y^{2}

  Then F is conservative

2. Curl F = < 0, 0 ,0>

  The potential function f so that  ∇f=F

  f(x,y,z) = -3/2x^{2} -y^{2}+z

  Then F is conservative

3. Curl F = <0 ,0, 10+3xsin(y) - (-cos(y))>

              = <0 ,0 , 10 +3xsin(y) + cos(y)<

 How the field's divergence is not zero the vector field is not conservative

4. Curl F = <0, 0, 0>  

  The potential function f so that  ∇f=F

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3 years ago
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Ivenika [448]

Answer:

0.\overline{369} = \frac{41}{111}

Step-by-step explanation:

x = 0.369369369...

10x = 3.69369369...

100x = 36.9369369...

1000x = 369.369369...

1000x - x = 369

999x = 369

x = \frac{369}{999} \\\\x = \frac{123}{333}\\\\x = \frac{41}{111}

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3 years ago
Please help me 1 through 9
8_murik_8 [283]

Answer:

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7) they are supplementary angles, or add up to 180 degrees

8) angle 1 is congruent to angle 4

9) angle K is supplementary to angle L

Step-by-step explanation:

8 and 9 are transitivity

The other statements correspond with the sentence starters.

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