7. A boy on ice skates has a momentum of 200 kg m/s to the left at a velocity of 20

m/s. How fast is the boy going?

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

the answer to this would be 5x^3-6x^2-24 over 3x^2

hope this if needed hmu

the anwser is x< -17/2