Posted by **jim** on Friday, May 28, 2010 at 11:42am.

9). Hooke’s Law. The distance d when a spring is stretched by a hanging object varies directly as the weight w of the object. If the distance is 29 cm when the weight is 4 kg what is the distance when the weight is 9 kg?

10). Find the variation constant and an equation of variation where y varies inversely as x and y =9 when x= 17?

11). It takes 8hr for 9 cooks to prepare the food for a wedding rehearsal dinner. How long will it take 3 cook to prepare the dinner? Also what variation applies Inverse or Direct?

12). The stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car traveling 80 mph can stop in 360ft, how many feet will it take the same car to stop at a speed of 70?

- Math help -
**bobpursley**, Friday, May 28, 2010 at 1:23pm
9 find k. k=4kg/29cm

distance=4/29 * 9 I am very disturbed by the questions statement that kilograms is weight. It is not weight, it is mass.

10 y=k/x put in x,y and solve for k.

11 time=cook/rate=3/(9/8hr)

## Answer this Question

## Related Questions

- math - Hooke's Law. The distance d when a spring is stretched by a hanging ...
- algebra - Hooke.s Law. The distance d when a spring is streched by a hanging ...
- Algebra II - Hooker's law. The distance d when a spring is stretched by a ...
- algebra - The distance d when a spring is stretched by a hanging object varies ...
- algebra - hooke's law the distance d when a spring is stretched by a hanging ...
- math - The distance d when a spring is stretched by a hanging object varies ...
- alegebra - 1. Many people know that the weight of an object varies on different ...
- algebra - Hooke's law states that the distance an object is stretched varied ...
- math - Hooke's law states that the distance an object is stretched varied ...
- math - Studying for a final help. Many people know that the weight of an object ...

More Related Questions