Over the last 3 evenings, Sumayya received a total of 117 phone calls at the call center. The third evening evening. The first evening, she received 9 fewer calls than the second evening. How many phone calls did Number of phone calls the first evening: Number of phone calls the second evening: Number of phone calls the third evening:

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Q: What does 42 =

A: 4^2 means  4×4

Matrices

‘Matrices’ is the plural form of the word matrix, and it is basically a spreadsheet in the form of a box. In mathematics, various functions can be carried out with matrices. Generally, a matrix comes in the shape of a square or rectangle. The elements are distributed horizontally in the form of rows, and vertically in the form of columns.