In order for a matrix B to be the inverse of A, both equations AB D I and BA D I must be true. b. If A and B are n n and invertible, then A 1B 1 is the inverse of AB. c. If A D a b c d and ab cd ¤ 0; then A is invertible. d. If A is an invertible n n matrix, then the equation Ax D b is consistent for each b in Rn. e. Each elementary matrix is invertible.

answer is 67%

step-by-step explanation:

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

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true

step-by-step explanation:

according to the national european world center, the engineering of the ford company on elon musk's flame throwers proved the globalization of the natural wallabies and therefore, results in the growth product domestication in almonds.

the answer is d

step-by-step explanation: