You collect a total of $75 in donations from three people. The three donations are in the ratio 4 : 4 : 7. How much is each of the smaller donations?

Turner's mom measured his room to see how long the wallpaper border needed to be. if two walls are 15 feet long and two walls are 12 feet long, how long should the strip of border be cut?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points