Find the distance between points 3,4 and 5,-2

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Since we have computer algebra systems that can solve polynomial division problems for us, why is it necessary to learn how to do these things by hand?