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4 years ago

What is the solution to this system of linear equations? 2x + y = 1 3x – y = –6 (–1, 3) (1, –1) (2, 3) (5, 0)

Mathematics

2 answers:

Mandarinka [93]4 years ago

4 0

The answer is (-1,3).

Pavlova-9 [17]4 years ago

3 0

Answer:

$(-1, 3)$

Step-by-step explanation:

We have two equations:

$2x+y=1\\3x-y=-6$

Adding the two linear equations:

$(2x+3x)+(y-y)=1+(-6)$

Simplifying

$5x+0y=1-6$

$5x=-5\\$

Clearing for $x$ :

$x=\frac{-5}{5} \\x=-1$

Now we substitute this value of $x$ in either of the two initial equations to find the value of $y$ , Substituting in the first one:

$2x+y=1\\2(-1)+y=1\\-2+y=1\\y=1+2\\y=3$

the answer is $(-1, 3)$ because $x=-1$ and $y=3$

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Aleksandr-060686 [28]

Answer: The answer is 1,600.
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4 years ago

What is the GCF of 44 and 32

RoseWind [281]

GCF = 4

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3 years ago

Thanks to its environmental initiatives, Lexington has cut its annual CO2 emissions by 10%. This year, the town produced 280,000

s2008m [1.1K]

Answer:

Step-by-step explanation:

Rate = 10%

Time = 2 years

Initial CO2 = 280000 metric ton

1st year

10% × 280000

= 28000 metric ton.

2nd year

10% × (280000 - 28000)

= 25200 metric ton.

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3 0

3 years ago

Answwer this please for 20 points and brainiest

Orlov [11]

264/2200 = 0.12

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6 0

2 years ago

Read 2 more answers

Find the value c that will make 9x^2 +30x+c a perfect square trinomial

anzhelika [568]

Answer:

$c = 25$

Step-by-step explanation:

Given :-

A quadratic equation is given to us.
The equation is 9x² + 30x + c .

And we need to find out the value of c for which the given trinomial is a perfect square. On looking at the given expression all the terms are having positive signs before them .So we can rewrite it on the basis of ,

Identity :-

$\implies (a+b)^2=a^2+b^2+2ab$