3 years ago

(05.02 MC)

Mathematics

2 answers:

Bas_tet [7]3 years ago

7 0

Answer:

There is no value to the x.

tankabanditka [31]3 years ago

5 0

Answer:

there is no value to x in this system because you don't have a number for the variable y

Step-by-step explanation:

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olasank [31]

Answer:

y = 3x-3

Step-by-step explanation:

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tiny-mole [99]

Answer:

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Step-by-step explanation:

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SpyIntel [72]

Answer:

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y=−8x−3 x+y=7 Is (3,4)(3,4)left parenthesis, 3, comma, 4, right parenthesis a solution of the system? Choose 1 answer: Choos

kirill [66]

Given:

The system of equation is

$y=-8x-3$

$x+y=7$

To find:

Whether (3,4) is a solution of the given system or not.

Solution:

We have,

$y=-8x-3$ ...(i)

$x+y=7$ ...(ii)

Putting the value of y in (ii) from (i), we get

$x+(-8x-3)=7$

$x-8x-3=7$

$-7x=7+3$

$-7x=10$

Divide both sides by -7.

$x=\dfrac{10}{-7}$

$x=-\dfrac{10}{7}$

Putting $x=-\dfrac{10}{7}$ in (i), we get

$y=-8\times (\dfrac{-10}{7})-3$

$y=\dfrac{80}{7}-3$

$y=\dfrac{80-21}{7}$

$y=\dfrac{59}{7}$

So, the only solution of the given system is $\left(-\dfrac{10}{7},\dfrac{59}{7}\right)$ .

Hence, (3,4) cannot be a solution of given system, Hence the correct option is B.

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nevsk [136]

No they are equal, reduce 2/6 to get 1/3

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