Discover Questions

7^(x+1) + 7^x + 7^(x-1) = 399, what is x? How many milliliters of concentrated of sulfuric acid (18 M) are required to make 7.0 L of 0.12M H2SO4? Find a positive angle, less than 360 degrees, that is coterminal with a 1715 degree angle. Please show steps!!? Find the complement of the angle 3pi/7. Please show steps!? Does NASA still use miles instead of kilometers?