3 years ago

When solving for the system of linear equations by substitution what is the coordinate?

Mathematics

1 answer:

Oliga [24]3 years ago

8 0

Answer:

x=-2, y=-9/2. (-2, -9/2).

Step-by-step explanation:

x=2y+7

3x-2y=3

--------------

3(2y+7)-2y=3

6y+21-2y=3

6y-2y+21=3

4y+21=3

4y=3-21

4y=-18

y=-18/4

simplify

y=-9/2

x=2(-9/2)+7

x=-9+7

x=-2

You might be interested in

The cost of breakfast cereal is Rs for 1 kg Calculate how much 25<br>breakfast cereal will cost.

Irina-Kira [14]

Answer:

25 gram = 1000\35 rs

Step-by-step explanation:

hope makatlulong po sau

6 0

3 years ago

Eric and Sarah both have lemonade stands. The graph below represents how many cups of lemonade Eric sells per day. The equation

Georgia [21]

Answer:

Eric

Step-by-step explanation:

At 5 days (the x axis), the y axis is 60 which is how much lemonade he sold.

sarah sold 10x or 10 x 5 days=50 cups.

‘Eric sold 60, Sarah sold 50

6 0

3 years ago

The table of values below represents an inverse variation relationship. what is the value of x when y= "3.25"?

joja [24]

Answer:

3.25,

Step-by-step explanation:

no it doesnt appear to be so. I did the math it said no

4 0

3 years ago

Which expression is equivalent to the expression below

pochemuha

Answer:

2/ 10^12

Step-by-step explanation:

see image below:)

3 0

3 years ago

The length of each side of a square is increased by 2 inches. If the perimeter is 20 inches, write an equation to show the origi

Archy [21]

The new length side of the perimeter, we'll call p. The original length, we'll call o. P's equation looks like this:
$p = 20 \times \frac{1}{4}$
Since 5 is the length of one side, subtract 2 from 5 to get 3. The equation looks like this:
$o = \frac{20}{4} - 2$
or simply
$o = 5 - 2$

3 0

3 years ago