In the square below, the two semi-circles are congruent. find the area of the shaded region. if necessary, round your answer to two decimal places.

the square side measures at 8in

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day