A student plays a total of 20 rounds of Rock Paper Scissors. He wins 75% of them. How many rounds did he win?

3. a sum of $2700 is to be given in the form of 63 prizes. if the prize is of either $100 or $25, find the number of prizes of each type.

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x, y) coordinate plane?

Aresearch study is done to find the average age of all u. s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample