If Jackie were to paint her living room alone, it would Take eight hours. Her sister Evelyn could do the job in nine hours. How many hours would it take them working together? Express your answer as a fraction reduced to the lowest terms if needed

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

Is the square root of 4 plus the square root of 16 rational?

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?