Factor w^4x^2y^3−w^2x^2y WITHOUT using grouping

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

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

To decrease an amount by 16% what single multiplier would you use