$\begin{aligned}x+2 y-3 z &=19 \\2 x-3 y+4 z &=-17 \\3 x-y &=4\end{aligned}$

question 4

Short Answer

$\begin{aligned}x+2 y-3 z &=19 \\2 x-3 y+4 z &=-17 \\3 x-y &=4\end{aligned}$
equations as a matrix equation AX=B is $\left[\begin{array}{rrr}1 & 2 & -3 \\2 & -3 & 4 \\3 & -1 & 0\end{array}\right]\left[\begin{array}{l}y \\x \\z\end{array}\right]=\left[\begin{array}{r}19 \\-17 \\4\end{array}\right]$
-Use an inverse matrix to solve the system given in above.

---

Definitions:

Neck

The part of the body connecting the head to the torso, containing structures like the cervical vertebrae, muscles, and blood vessels.

Baby's Head

A reference often used in childbirth to indicate the part of the baby that is delivered first in a normal vaginal delivery.

Birth Process

The series of events that lead to the delivery of a baby, including labor and passage through the birth canal.

Pelvic Inlet

The upper opening of the pelvis, through which structures can pass between the trunk and the legs.