Congruent is the same size and same shape. When a ray bisects an angle, the two newly created angles will be congruent, since the ray went right in the middle of the first angle (so in this case, ABC and DBC will be congruent)
You can group first two conjunctions and second two:

.
In first brackets you have common

and in second brackets common is 5:

.
Answer:
The first one is a line because a line extends infinitely in both directions which the arrows indicate.
The second one is a plane since it is a 2-dimensional shape.
The last one depicts 2 rays because rays have one endpoint, but extend infinitely in the other direction.
Answer:
6 drawers
Step-by-step explanation:
Total no. of shirts = 8×3
= 24
No. of drawers of shirts filled
= 24÷4
=6
Answer:
2x+3x+4=6
Step-by-step explanation:
You'd plug in the y-equation which is y=3x+4 into the placement of the y in the first equation 2x+y=6,
Which would then result in 2x+3x+4=6, which is the answer