Me ! for 20 points i really need this is for grade 7.

If a || b and e || f, what is the value of y ?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)