One of the ways to solve a system of equation is by using the substitution method
The values of x and y are -9 and 5
<h3>How to use the
substitution method </h3>
The equations are given as:
2x + 6y = 12
x + y = -4
Make x the subject in the second equation
x = -4 - y
Substitute x = -4 - y in the first equation
2(-4 - y) + 6y = 12
Expand
-8 - 2y + 6y = 12
Add 8 to both sides
- 2y + 6y = 20
So, we have:
4y =20
Divide through by 4
y = 5
Recall that:
x = -4 - y
So, we have:
x = -4 - 5
x = -9
Hence, the values of x and y are -9 and 5
Read more about the substitution method at:
brainly.com/question/13476446
Answer:
(っ◔◡◔)っ ♥ 36 square root 2 ♥
Step-by-step explanation:
anshan has snndfnm gn kmfkejtkdr
Answer: x=20
Step-by-step explanation:
The two angles are vertically opposite so they are equal to each other
7x-99=2x+1
5x=100
x=20
Answer: Bottom left corner
Let n be an odd number. Because 4n is a multiple of 2, it is an even number.
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Explanation:
The square has a side length of n, so its perimeter is 4n since n+n+n+n = 4n.
We can rewrite 4n as 2*2n = 2m where m = 2n is an integer. Any number in the form 2*(some integer) is always even. Even numbers always have 2 as a factor.
So whenever it comes to proving something is even, the ultimate goal is to get it into the form 2*(some integer). If we can do this, then the number is even. If not, then the number is odd.
