What error did Alan make? He substituted 45 for F instead of –7 and should have found the answer to be degrees Celsius. He did not combine within the parentheses first before multiplying and should have found the answer to be degrees Celsius. He multiplied 45 by the fraction incorrectly and should have found the answer to be 49 degrees Celsius. He divided 5F by 9 before subtracting 32 and should have found the answer to be degrees Celsius.

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answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column