Answer:
(-3, 4)
It doesn't show any coordinates so I assume that the origin is where the x and y axes intercept

We know that
.
Solve using cross multiplication of the last two fractions. I will use
to represent the width of the rectangle. 
Multiply. 
Divide both sides of the equation by
. 
Answer:
7
Step-by-step explanation:
Consecutive odd numbers are 2 apart
they are
x,x+2,x+4,x+6
10+2x=x+4+x+6
10+2x=2x+10
x=x
true
any consecutive odd integers will work
1,3,5,7 works
3,5,7,9 works
etc
Answer:
7 groups
Step-by-step explanation:
Each group would have 1 blue marble and 3 green marbles