To find 19+(11+37), lennie added 19 and 11. then he added 37 to the sum. what property did he use?

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

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

Dots sells a total of 279 t-shirts ($2) and shorts ($4). in april total sales were $670. how many t-shirts and shorts did dots sell?