The time t required to drive a fixed distance varies inversely as the speed r. It takes 7hr at a speed of 90km/h to drive a fixed distance. How long will it take to drive the same distance at a speed of 60km/h? It will take ? to drive the same distance at a speed of 60km/h.

Q: The number of parts produced by three different machines are shown in the tables. Only one of the…

A: We have to find out which machine produce parts at constant rate.

Q: The time (T) it takes to plant rice in an acre varies inversely as the number of farm workers (W).…

A: The time (T) it takes to plant rice in an acre varies inversely as the number of farm workers (W).…

Q: The force required to compress a spring varies directly as the change in the length of the spring.…

A: Given in the problem  The force required to compress the spring is directly proportional to the…

Q: The velocity V of a free-falling object is directly proportional to the time T (in seconds) that the…

A: Given:

Q: A plane travels 800 miles from Dallas, Texas, to Atlanta, Georgia, with a prevailing wind of 40 mph.…

A:

Q: The distance a ball rolls down an inclined plane is directly proportional to the square of the times…

A:

Q: Geographers find that the length of a river varies with the 0.6 power of the river basin. The Rio…

A: Given that length of river varies with the 0.6 power of the river basin.

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.