What is the product?
(7x²) (2x + 5)(x² - 4x-9)

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

How do you summarize data in a two-way frequency table?