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AnnyKZ [126]
3 years ago
12

What is the solution of the system of equations? 3x + 6y = –2 15x + 30y = –10

Mathematics
2 answers:
cestrela7 [59]3 years ago
7 0
3x + 6y = -2......multiply by -5
15x + 30y = -10
--------------------
-15x - 30y = 10 (result of multiplying by -5)
15x + 30y = -10
--------------------add
0 = 0

there are infinitely many solutions

MrRa [10]3 years ago
5 0
3x + 6y = -2 
x = -2y-2/3
15x +30y = -10
x = -2y- 2/3

The answer would be C
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valentina_108 [34]

Answer:

CODE: 1977.98

Step-by-step explanation:

A.

(To get the closest answer, round the circumference to the nearest ten thousandth.)

C = 2(3.14)r                      Circumference formula: C = 2πr

C = 2(3.14)(3)

C = 18.84

B.

A = (3.14)r²

A = (3.14)(3)²

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C. (It's asking for the circumference.)

C = 2(3.14)r

C = 2(3.14)(58)

C ≈ 364.24

D. (It's a linear pair, which is 180 degrees.)

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m∠ABD = 4x

m∠ABD = 4(30)

m∠ABD = 120°

E. (∠GHI & ∠JHK are vertical angles, so they are congruent.)

x + 7 = 3x - 21

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F. (x = 14)

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m∠JHK = 42 - 21

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G. (Supplementary - two angles that add up to 180 degrees.)

180 - 84

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CODE: E(C - D) - F(G - B) - A

CODE: 14(364.24 - 120) - 21(96 - 28.26) - 18.84

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CODE: 1977.98

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tiny-mole [99]
ANSWER

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EXPLANATION

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These are the solutions of the polynomial function represented by the given graph.




We can write all these solutions as factors to obtain,

x  + 2  ,x + 1 ,x - 1   \:  \:and \:  \: x - 2


The product of all these factors gives us the function whose graph was drawn.


This implies that,

f(x) = (x - 2)(x - 1)(x + 1)(x  + 2)


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