What is the answer for 39 40 36 37 33 34

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

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?