When sierra gets home 3/4, of a sandwich is left in the refrigerator. she cuts the remaining part into three equal
parts and eats two of them. what fraction of the whole sandwich did she eat?

Brent wants to know what is 5 x 1/2

Just tell me how to set up the equation.

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed