This statement is false. It can be answered. It is not equal.
Answer:
2/3
Step-by-step explanation:
Each time 2 parts of red is being used, 3 parts of yellow is used. The yellow depends on the red so 2/3.
Let the two numbers be x and y.
We know that:
x+y=72
x-y=12
Sum the two equations:
2x=84
Divide both sides by 2:
x=42
Plug this value for x in one of the two equations:
42-y=12 ---> y=42-12=30
Given:
<span>x^2 + y^2 + z^2 + 2x − 2y − 2z = 22
group the variables
x^2+2x + y^2-2y +z^2-2z = 22
then complete the squares
x^2+2x+1 </span>+ y^2-2y+1 + z^2-2z+1 = 22 +1 +1 +1
factor and simplify
(x+1)^2 + (y-1)^2 + (z-1)^2 = 5^2
Interpretation:
The centre of the sphere is at (-1,1,1) with a radius of 5