Answer:
The coefficient of
is 
Step-by-step explanation:
The two expressions are
and
.
The sum of the two expressions is

When we group like terms the expression will be,

When we simplify the expression will now be

The coefficient of
is the constant behind
in the expression.
The coefficient of
is therefore
.
Answer:

Step-by-step explanation:
1: find the perpendicular gradient - this is the negative reciprocal of the original gradient:

2: Substitute in the coordinate to find the value of c:

3: Put it all together:

Answer:C
Step-by-step explanation:
x=4+√21,4−√21
Decimal Form:
8.58257569
0.58257569
Solute = what is dissolved
solvent = that which dissolves or can dissolve
You take it from here.