- Sherry first took the multiplication instead of taking the sum of 16 and 9 first.
- The right expression is: 2* (16+9)
Step-by-step explanation:
Sherry's expression was:
(2*16)+9
Her expression was wrong because it is mentioned that twice the sum of 16 and 9 which means that first the sum has to be calculated then the sum will be multiplied by two.
So,
The right expression is: 2* (16+9)
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Answer: because he might be getting groceries and gas and other things
Step-by-step explanation:
mathematically the answer to that is 18 because 10.2 minus 2.4 is equal to the difference of 7.8 and 7.8 plus 10.2 is equal to the sum of exactly and positively 18