You know there are 30 people in your math class. If you take a random sample of 100 people at a school assembly and 5 of them are in your math class, how many students would you expect there to be total in the school?

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?

Is this a polynomial function? i need to know asap

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers