The first given equation is:
x - 7y = -20
We can rewrite this equation as follows:
x = 7y - 20 ...........> equation I
The second given equation is:
-3x + 9y = 36 ..........> equation II
Substitute with equation I in equation II to get the value of the y as follows:
-3x + 9y = 36
-3(7y-20) + 9y = 36
-21y + 60 + 9y = 36
-12y = 36-60 = -24
y = (-24) / (-12) = 2
Now use the value of the y and substitute in equation I to get the value of the x as follows:
x = 7y - 20
x = 7(2) - 20 = 14 - 20 = -6
Based on the above calculations:
x = -6
y = 2
Answer:
-5
Step-by-step explanation:
Since,there are twelve digits given, we can arrange them in such a way that they make three rows.
On subtracting the second row from the first row, we have
3,3,5,4, the first three digits of these numbers are equal to the sum of the first three numbers in the third row. With the help of this, the answer will b -5.
Yes is (-1,0) a solution of the system of equations.
<h3>A linear equation is defined.</h3>
A linear equation is one that has a maximum degree of 1. No variable in a linear equation has an exponent greater than 1, thus. A linear equation's graph is always a straight line.
Since each term in a linear equation has an exponent of 1, graphing an algebraic equation always yields a straight line. It is called a "linear equation" because of this.
Given
y=-4x-4...(i)
y=4(x+1)
=> y =4x + 4....(ii)
Adding (i) and (ii) we get
y= 0
Now putting y = 0 in Equation (i)
we get x = -1
Therefore <u>(-1,0)</u> is the solution of the two given equations.
To learn more about linear equations click on the link below:
brainly.com/question/24085666
#SPJ13
-
× -
=
Note that it is
not -
since two negatives will cancel each other out.
Now we need to simplify
. We do this by dividing by the greatest common factor. I'll use the guess and check method, but there are other methods that you could also use.
÷
=
Your answer would be
Answer:
El perímetro es 16, por qué para hallar el perímetro son la suma de sus 3 lados.
el área es la base por altura, que en este caso sería...