Robyn ran 5 3/4 miles last week she ran 4 1/4 miles this week how many more miles did she run last week

What number must you add to complete the square x^2+12x=16

2men and 7 boys can do a piece of working 4 days.it is done by 4 men and 4 boys in 3 days how long would it take for 1man or one boy to do it alone

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race