The answer is 24x^2 + 80x + 24
Answer:
x=4
Step-by-step explanation:
8x - 7 =2(2x +7) - 5
8x - 7 =4x +14 - 5
8x - 7 =4x +9
8x - 4x =9 +7
4x =16
x=16 :4
x=4
Answer:
Distance between two point = 3.6 (Approx.)
Step-by-step explanation:
Given:
Coordinate;
(-4, -6) and (-1, -4)
Find:
Distance between two point
Computation:
Distance between two point = √(x1 - x2)² + (y1 - y2)²
Distance between two point = √(-4 + 1)² + (-6 + 4)²
Distance between two point = √(-3)² + (-2)²
Distance between two point = √9 + 4
Distance between two point = √13
Distance between two point = 3.6 (Approx.)
Ok , with that information we can write the equations
x + y = 6
5x + 4y = 28
Where x = how many people ordered chicken
and y = how many people ordered egg salad
Through elimination , we can set one of the variables in both equations equal so we can eliminate it :
(4)x + (4)y = (4)6
5x + 4y = 28
4x + 4y = 24. equation 1
5x + 4y = 28. equation 2
Now we can subtract the second equation by the first equation and isolate one variable:
equation 2 - equation 1
5x - 4x + 4y - 4y = 28 - 24
x = 4
Now that we discovered our x value ( How many people ordered chicken salad ) , we can apply it to one of the equations and discover y ( how many people ordered egg salad)
x + y = 6
x= 4
4 + y = 6
We can shift 4 to the other side of the equation by subtracting 4 from both sides of the equation:
4 - 4 + y = 6 - 4
y = 2
x=4 and y=2
So the awnser is :
4 people ordered chicken salad and 2 people ordered egg salad!
I hope you understood my brief explanation!!
p.s if you want to know how to use another method to solve these problems ( Substition) , just let me know in a comentary down here
Step-by-step explanation:
The difference of a and b is added to 4
- <em>(</em><em>a-b)</em><em>+</em><em>4</em>