Find the perimeter of the shaded region. Keep answer in exact form. rectangle with two semi circles within it. semi circle have a diameter of 6 and regtangle has a lenght of 13.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Which number completes the system of linear inequalities represented by the graph? y> 2x – 2 and x + 4y 2 et 2 3 4

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?