All categories

3 years ago

2x + y = 3

Mathematics

2 answers:

OLEGan [10]3 years ago

7 0

The first answer is right

sergejj [24]3 years ago

4 0

Hey there!

First, multiply the second equation by -2 as the problem states. When you multiply the second equation by -2, you get:

-2x+4y=2

Now, add this equation to the first equation in which you simply combine like terms:

2x+y=3

-2x+4y=2

5y= 5

In conclusion, the correct answer would be the first choice.

You might be interested in

What is the area of a regular pentagon with a side of 7.2 and an apothem of 7

timofeeve [1]

The area of a regular polygon is given by the formula which is expressed as:

area = (½)(apothem)(perimeter)

We calculate as follows:

area = (½)(7)(7.2 x 5)
area = 126 square units

Hope this answers the question.

5 0

3 years ago

If the area of a circle is 576 pie squared what is the circumference

kenny6666 [7]

576^2 = 24 ÷ 3 = 8 × 2r = 8 × 6 = 48

7 0

3 years ago

Read 2 more answers

Can someone help me with this?

disa [49]

Alright, the answer is B and I’ll tell you why. Look at the problem and see the order that they write the triangles in. ABC and XYZ, this is telling us that the angles in order are congruent to each other. Hope this helps :)

7 0

3 years ago

I need answers now graphing help now

Paul [167]

Answer:

its a right triangle

Step-by-step explanation:

7 0

3 years ago

The line CD passes through the points C (2, -1) and D (1, 1). Which of the

inn [45]

Answer:

The equation of the straight line in point - slope form

y +1 = -2 ( x-2)

Step-by-step explanation:

Step(i):-

Given points are C( 2,-1) and D(1,1)

Slope of the line

$m = \frac{y_{2}-y_{1} }{x_{2}-x_{1} } = \frac{1-(-1)}{1-2} = \frac{2}{-1} = -2$

m = -2

Step(ii):-

Equation of the straight line passing through the point ( 2,-1) and having slope

m =-2

y - y₁ = m ( x- x₁)

y - (-1) = -2 ( x-2)

y +1 = -2 ( x-2)

Final answer:-

The equation of the straight line

y +1 = -2 ( x-2)

3 0

3 years ago