Televisions screens are described according to the measure of the diagonal. A 60 inch screen is 48 inches long. what is the height ? Round to the nearest tenth, if necessary

The answer is 1 because you have to flip the sign when dividing by negative number and 3

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post