Answer: Hi!
Remember, when you're subtracting a negative, that's equal to adding a positive. So -2-(-17) is actually equal to -2 + 17!
-2 + 17 = 15
The expression -2-(-17) is equal to 15.
Hope this helps!
For this case we have that David drew the cards given by:
We have:
Where "x" represents the sum of the cards that David drew.
To add, we first group similar terms:
Taking into account that equal signs are added and the same sign is placed, we have:
Taking into account that different signs are subtracted and the sign of the major is placed, we have:
Thus, the sum of David's three cards is
Answer:
The sum of David's three cards is 2
Answer:34.83
Step-by-step explanation:
4.5kwh+ 9kwh Is 13.5kwh which is how much is being used with both the freezer and a washing machine
It cost 21.5 per kWh so multiply 13.5 by 21.5 to get 290.25
To see what it would be in a year multiply 290.25 by 12(months in a year) to get 3483
1/2(x+y)-1/3y
The sum means you have to add, if you are taking 1/2 of the sum that means you multiply by 1/2. Lastly decreased means subtracting