Answer:

Step-by-step explanation:

1) First, distribute the 10 and the -8 to the terms in the parentheses next to them. Remember, don't distribute to the -4h since it is not in the parentheses.

2) Next, combine like terms. (Any terms that have the same variables must be added together by their coefficients.)

There are no more like terms to combine, so
is the answer.
Answer:
Option (B)
Step-by-step explanation:

By applying multiplication property of the matrices,
Therefore, system of equations formed will be,
5x + 2y + z = 16
7x - 5y + 2z = 3
-5x + 3y + z = 12
Option (B) will be the correct option.
Answer:
A. XY
Step-by-step explanation:
A chord has both ends on the circle. Point X is not on the circle so segment XY is not a chord.
Isocoleese means 2 angles are same, normally the base angles
so since it says they measure 42
rememeber that all angles in traingle add to 180
so base angles+vertex angle=180
base angles aer both 42 so
2 times 42+vertex angle=180
42 times 2=84
so
if veretx angle=z then
84+z=180
answer is B