Now pls! algebra 1 hw stuck on a question

question:
the polynomial, 5v to the 3rd - 4v to the 2nd + 10v is subtracted from the polynomial, 7v to the 2nd + 2v to the 3rd -7v. the difference can be expressed as av + bv+ cv + d. rudy said that the value of a is 3. is rudy correct? justify your answer

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

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?

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t