Please explain how?? 2-(-8)= 10

How is it 10

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate