Determine if each pair of ratios are equivalent. 1. 8/5, 24/20 2. 0.5/10, 5/100 3. 1.3/5.2, 12/48

Find the value of the variable and the length of each secant segment.

Triangle xyz has vertices x(1,3), y(0,0)

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