Write a subtraction expression to represent the difference between boston
average low temperature in january and chicago's average low temperature in
january. then write the subtraction expression as an addition expression.

average for boston:
-5°c

average for chicago:
-11°c

Alr cool i like typing things ; ; ! & : 9: & : & : & & 392: ; ! ,@: 929: & : 83$:

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First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.