Answer:
1.1 ,-9.1
Step-by-step explanation:
Answer:
B. All diagonal matrices are square matrices.
C. The size of any square matrix is m x m, where m is a positive integer.
Step-by-step explanation:
Where are the inequalities?
Answer:
x²/9 − (y + 1)²/81 = 1
Step-by-step explanation:
-2y − 82 + 9x² = y²
9x² = y² + 2y + 82
9x² = y² + 2y + 1 + 81
9x² = (y + 1)² + 81
9x² − (y + 1)² = 81
x²/9 − (y + 1)²/81 = 1
