Hey there!
y-12=20
Add 12 to both sides. (do the inverse of subtraction, which is addition)
y=32
Check answer.
32-12=20 <=== checks out :)
I hope this helps!
~kaikers
Answer:
There are 6 green beads there.
Step-by-step explanation:
This question can be solved by a system of equations.
I am going to say that:
x is the number of green beads
y is the number of yellow beads
The ratio of green beads to yellow beads in a bracelet is three to four.
This means that

So


The total number of beads is 14.
This means that 
How many green beads are there ?
This is x.

However

So

Using multiplying by the gcm(3)



There are 6 green beads there.
Answer:
The wide of river is 
Step-by-step explanation:
In this problem we know that
Triangles DEG and DEF are congruent by ASA (Angle-Side-Angle) Congruence
therefore
EG=EF

If u separate these into 2 triangles then they will become 90 degree triangles so angle a=angle c.