Answer:
The last answer choice, or [-15 14 4a]
[-4 5b -23]
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Step-by-step explanation:
In order to subtract matrices, they have to have the same dimensions, which this problem provides(both 3x3) Then, just subtract the numbers on the right from the corresponding numbers on the left. Example: -3-12=-15, which is the top left answer. Repeat with all positions.
Answer:the answer is A
Step-by-step explanation:
The points have been plotted on the coordinate graph.
Step-by-step explanation:
remember, the area of a triangle is
baseline × height / 2
so, for this one the area is
13 × 4 / 2 = 13×2 = 26 ft²