(3, -2)
Step-by-step explanation:
y = -2x + 4
-x + 3y = -9
-x + 3 (-2x + 4) = -9
-x + -6x + 12 = -9
-7x = - 9 – 12
-7x = - 21
X = 3
We substitute x with 3 to evaluate y;
-3 + 3y = -9
3y = -6
y = -2
Elimination Method;
y = -2x + 4
-x + 3y = -9
We arrange the equations for substitution;
2x + y = 4
-x + 3y = -9
We multiply the first equation with 3 so we can substract one variable to zero;
3 (2x + y = 4)
= 6x + 3y = 12
Then we subtract the two;
6x + 3y = 12
-x + 3y = -9
7x = 21
x = 3
We evaluate y by substitution x with 3 in one of the equation;
-x + 3y = -9
-3 + 3y = -9
3y = -6
y = -2
The final answer expressed as a coordinate point is;
(3, -2)
Answer:
????
Step-by-step explanation:
what is the question??
Answer:
the circle of life
Step-by-step explanation:
ik it fools us all
Answer:
$1.38
Step-by-step explanation:
$1.15 = 100%
So...
$1.15 + (1/5.1.15) =
$1.15 + $0.23 = $1.38
Answer:
AB = √116 ≈ 10.77
Step-by-step explanation:
Use the formula that calculate the distance between two points:
L means length
For the x and y, substitute a coordinate value that you will label as set 1 or 2.
For example:
A (-3, 7) will be set 1. x₁ = -3 y₁ = 7
B (7 , 3) will be set 2. x₂ = 7 y₂ = 3
Substitute the points into the formula to find the length AB. Simplify.
Solve inside the brackets first
Square each term under the root
Add under the root
Final exact answer is radical (root) form
Final approximate or rounded answer to 2 decimals
The length of AB is the squareroot of 116, or about 10.77 units.