If you need to put 1 teaspoon in a 10 gallon tank how many teaspoons for a 8 gallon tank

For the equations below which statement is true ?

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

What describes horizontal cross section of the right rectangle 6m 8m 5m