Indicate whether each source is reliable or
unreliable
a goverment website
a university professor's personal blog
a commercial website
an online peer-reviewed science journal

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?

Volume is a measurement of how fast particles of a substance are moving