-21 - (-13)
-21 + 13
= -8
The answer B)
Step-by-step explanation: i will try t look for him but i have not seen him at all
Answer:
18 machines
Step-by-step explanation:
9 machines give 24 mins... You need to reduce the time by half by adding using double the machines..
So 9×2=18
Answer:
The probability would be certain. This is because 
simplifies to 1, which would be 100%. If something has a 100% chance of happening, there would be no way it would not occur.
Answer:
He has 21 toys
Step-by-step explanation:
