hey guys im doing delta math and need your help if the answer is right i will give brainliest plz right answer only

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?