What is2(12-w)=-2(w-17)-10

Find |−5|. a. −5 b. 5 c. one-fifth d. –one-fifth !

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

Ineed me i stuck and i don’t want to get it wrong