What is the equation subtracting 7 from the product of 4 and a number results in the number added to 29

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.

Your car's gasoline tank holds 18 gallons of gasoline. on a trip in canada, the tank is one-quarter full. you want to fill the tank. how many liters of gasoline are needed to fill the tank

Prove the following(cot0+cosec0)[tex](cot0 + cosec0) { }^{2} = \frac{1 + cos0}{1 - cos0} [/tex]