Answer:
hi
Step-by-step explanation:

have a nice day
1 and 1/2 is the same as 1.5 and 1.5 * 4 is 6 so I would say 4
Answer:
A and C
Step-by-step explanation:
Both angles j and m share one common side and vertex with angle k. Angle n only shares a vertex and not a side with angle k, so it is not adjacent.
Answer:
The solution of this expression is
and
.
Step-by-step explanation:
The procedure for solution of exercise A is described below:
1) We expand the expression.
2) The resulting expression is rearranged into the form of a second order polynomial.
3) Roots are found by Quadratic Formula.
Step 1:



Step 2:

Step 3:



The solution of this expression is
and
.