Answer:
what one
Step-by-step explanation:
if it is the left one it is -7(2x)+-7(7)+10x=-4x
Use the Pythagoras Theorem in the corresponding right angled triangles.
Answer:

⇒
[Factorized form]
Step-by-step explanation:
Given expression:

We need to make
the subject.
In order to do that we need to solve the expression for
in terms of
and 
We have,

Subtracting both sides by 


Taking square root both sides in order to remove square of 


The difference of squares can be factorized and written as:
[difference of squares
]
Multiply by -2.
x > -8
_____
Multiplying or dividing by a negative number causes the direction of the relationship to change.
You just take the number of the color of interest (green) and divide by total marbles
9/35 = 0.257 ~~ 25.7%