Find two numbers that multiply to -81 but add to 0

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96

Find two numbers if their sum is 91 and the ratio is 6: 7?

Opposite angles in a parrellelogram are