8. A passenger train travels 10 km/h faster than a foods train. If the distance between two stations is 100 km. the passenger train completes the journey in
30 minutes less than the goods train. Determine the speed of the goods train.​

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?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?