If i have 9 objects in front of me. How many ways can i choose 4 of them if order matters ?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

What are the solutions to the equation 4x2+3x=24-x