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Levart [38]
3 years ago
5

Plz help and show how you did the math question

Mathematics
1 answer:
Nikitich [7]3 years ago
8 0

Answer:

x =  - 3

y =  - 2

Step-by-step explanation:

Since y=x+1 plug it into bottom equation as y.

x + 1= 5x + 13

Subtract 1 from both sides

x = 5x + 12

Subtract 5x from both sides

- 4x = 12

Divide both sides by -4

x =  - 3

Now x=-3 into the top equation to find y

- 3 + 1 =  - 2

y=-2

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What are the solutions of this system of equations?
SpyIntel [72]

Answer:

Option C is correct.

Step-by-step explanation:

y = x^2-x-3     eq(1)

y = -3x + 5      eq(2)

We can solve by substituting the value of y in eq(2) in the eq(1)

-3x+5 = x^2-x-3

x^2-x+3x-3-5=0

x^2+2x-8=0

Now factorizing the above equation

x^2+4x-2x-8=0

x(x+4)-2(x+4)=0

(x-2)(x+4)=0

(x-2)=0 and (x+4)=0

x=2 and x=-4

Now finding the value of y by placing value of x in the above eq(2)

put x =2

y = -3x + 5

y = -3(2) + 5

y = -6+5

y = -1

Now, put x = -4

y = -3x + 5

y = -3(-4) + 5

y = 12+5

y =17

so, when x=2, y =-1 and x=-4 y=17

(2,-1) and (-4,17) is the solution.

So, Option C is correct.

7 0
3 years ago
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Step-by-step explanation:

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x = 26


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Step-by-step explanation:

Rhombus has that equiangular and is equilateral but I'm not entirely sure about this...

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