Multiply 12x2y4z(-4x3y6z2)

Which ratio is equivalent to 10: 85

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

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