Logan has 30 balloons two fifths of the balloons are purple how many of the balloons are purple ​

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers