Hello!
To solve this problem, we will use a system of equations. We will have one number be x and the other y. We will use substitutions to solve for each variable.
x+y=9
x=2y-9
To solve for the two numbers, we need to solve the top equation. The second equation shows that x=2y-9. In the first equation, we can replace 2y-9 for x and solve.
2y-9+y=9
3y-9=9
3y=18
y=6
We now know the value of y. Now we need to find x. We can plug in 6 for y in the second equation to find x.
x=2·6-9
x=12-9
x=3
Just to check, we will plug these two numbers into the first equation.
3+6=9
9=9
Our two numbers are three and six.
I hope this helps!
=32 bruhh I really don't know this so can u get someone to help me because its not working or answering my questions
Eliminate .
Eliminate .
The Jacobian for this change of coordinates is
with determinant
Answer:
i’m pretty sure it’s because they make 180°
Step-by-step explanation:
Answer:
x = 3 and y = -1
Step-by-step explanation:
It is given that,
3x + 2y = 7 ----(1)
2x - 5y = 11 ---(2)
<u>To find the solution of given equations</u>
eq(1) * 2 ⇒
6x + 4y = 14 ----(3)
eq(2) * 3 ⇒
6x - 15y = 33 ----(4)
eq(3) - eq(4) ⇒
6x + 4y = 14 ----(3)
<u>6x - 15y = 33 </u> ----(4)
19y = 19
y = -1
Substitute the value of y in eq (1) we get,
3x + 2y = 7 ----(1)
3x + (2 *-1) = 7
3x = 7 + 2 = 9
x = 9/3 = 3
Therefore x = 3 and y = -1