Thursday

October 2, 2014

October 2, 2014

Posted by **Prabhakaran** on Monday, October 8, 2012 at 3:30pm.

- math -
**Steve**, Monday, October 8, 2012 at 4:09pmdraw a diagram. using similar triangles, if the length of the shadow is x, and the distance to the lamp is y,

x/6 = (x+y)/16

16x = 6x + 6y

10x = 6y

x = 3/5 y

since y is changing at -5ft/sec

x is changing at -3ft/sec

no matter where the man is.

**Answer this Question**

**Related Questions**

Calculus - A man is 6ft tall and is walking at night straight toward a lighted ...

calculus - A street light is at the top of a 15.000 ft. tall pole. A man 6.300 ...

math - A street light is mounted at the top of a 19-ft-tall pole. A man 5.5 feet...

Calculus - Shadow Length A man 6 feet tall walks at a rate of 3 ft per second ...

Pre Calc - Dr. Black is standing 15 feet away from the street lamp. The lamp is ...

Calculus - A street light is hung 18 ft. above street level. A 6-foot tall man ...

Math - a man 6ft tall walks at the rate of 5ft/sec toward a streetlight that is ...

Calculus- rates - A man 6ft. tall walks at the rate of 5 ft/sec toward a ...

math - a man who is 5 feet tall stands 15 feet from a lamppost that is 27 feet ...

Math Urgent help please - A lamppost casts a shadow of a man who is standing 15 ...