Provide an appropriate response.In order to add 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12, Mary wrote the sum as (5 + 12) + (6 + 11) + (7 + 10) + (8 + 9) = 17 + 17 + 17 + 17 = 68. What properties of addition justify Mary's procedure?
What will be an ideal response?
Associative and commutative properties of addition
Mathematics
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A. 10 in. B. 4 in. C. 14.14 in. D. 2.83 in.
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Find the median.Monthly net gains: $6932, $3067, $2865, $6559, $8213, $3247, $1329, $7002, $5452, 
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Use the definition or identities to find the exact value of the indicated trigonometric function of the acute angle ?.sec ? = 
Find cot ?.
A. 
B. 
C. 
D. 
Mathematics