That would be 11:250
Hope this helps! (:
Answer:
Step-by-step explanation:
x^2-6x=7 is our equation
x^2-2*3*x= 7
So the term we will be adding is 3^2 since 3 the second term is 2*3*x
x^2-6x+9=7-9
We added 9 and substract it to keep the equation
(x+3)^2 = -2
Wich is impossible since a squared number is always positive
Yes it is a direct variation
0.4 is

and that simplified is

because you take the GCF or Greatest Common Factor, which is two, and divide both parts of the fraction taking

and turning it into