Christopher G.

physics question

If f(x)=x^xln(2x−7), then f′(x)=x^xln(2x−7)g(x), where g(x) equals what?

The difference of two numbers is 12, and the sum of the two numbers is 40. What are the two numbers?  

A company want to install an electrical ramp to allow wheelchair access regulations state that the gradient must not exceed 0.8. the electric ramp is 319 cm long and has a vertical height of 220... more

The speed of sound is normally 1080 ft/sec. John black stands on an observation deck and yells down a canyon. If he hears his echo 1.7 seconds later, how deep is the canyon to the nearest foot?

(√7x) /x+7 

A students grade in a course is the average of 4 test grades and a final exam that is worth twice as much as each test. Suppose a student has test grades of 91,82,83,92.