8 - 15 means subtract the positive number 15 from 8.
8 - 15 = 8 + (-15) = -7
8 - (-15) means subtract the negative number -15 from 8.
Subtracting a negative number is the same as adding a positive number.
8 - (-15) = 8 + 15 = 23
8 - 15 = -7, and 8 - (-15) = 23. The expressions mean different operations and have different answers.
Since -1 is less than or equal to -1 you input it into the first equation.
-3•(-1) -4
3-4
-1
the answer is -1 good luck
Answer:
Rob won because if dale came in last then hes already marked out but then we have henry and charles. if henry finished ahead of charles that wouldve made him second to last but remember that rob ran faster then henry so rob mustve finished first.
Step-by-step explanation:
