Solve the system of equations by Gauss Jordan (matrices). If no solution exists, enter in DNE for x, y, and z. You must use this technique. If you use another technique, even if you arrive at the correct answer your score on this problem will be a zero. Also, to get full credit your last matrix needs to be in row reduced form. x – y + 2 z = – 5 4 x + z = 0 – x + y – 2 z = 20 x = [BLANK-1] y = [BLANK-2] z = [BLANK-3]
Read DetailsFill in the blanks: Apex, Branches, Diastole, P, QRS, Septum, Systole, T The body uses a pacemaker to coordinate contraction in the heart. The initial depolarization of the heart’s cells appears as the _______ wave in the electrocardiogram (that’s the ECG or EKG). But the atrial _______ (or contraction) doesn’t begin for a moment longer. Meanwhile, the depolarization travels down the _______ that goes between the sides of the heart, in special modified nerves called bundle _______ (plural). From the bottom of the heart, which confusingly is called the _______ , the depolarization wave travels upwards through Purkinje fibers. This massive depolarization produces the _______ wave, which hides the wave from atrial _______ , or relaxation. The rest of the heart relaxes soon after, producing the _______ wave. If it’ll help you, here’s a picture of the ECG:
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