The n × n identity matrix is the matrix with diagonal entries are all 1’s and the rest are all 0’s. show that, for any n×n matrix a, we have ai=ia=a.

three-fourths of an hour

36÷48=0.75

0.75=

option 1

data plot with   3 dots over 33, 1 dot over 34, 2 dots over 35, no dot over 36, 1 dot over 37, 2 dots over 38, 4 dots over 39, and 2 dot over 40.

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation:

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step-by-step explanation: