Friday

September 19, 2014

September 19, 2014

Posted by **mysterychicken** on Saturday, June 12, 2010 at 6:34pm.

15. A boat travels 30 miles upstream in 4 hours. The trip downstream takes 2.5 hours. Find the rate of the boat in still water.

20. Solve: 5x^2 - 10x = 0

50. (x-1)(x^3 + x^2 + x) =?

Thanks

-MC

- Algebra -
**Henry**, Saturday, June 12, 2010 at 7:14pm2. C1=C2 7.95+.05X=9.95+.03X

.05X-.03X=9.95-7.95

X=100 Minutes

CI=Cost at 1st company

C2=Cost at 2nd company

- Algebra -
**Henry**, Saturday, June 12, 2010 at 7:46pm15. Rate upstream=30/4=7.5m/hr

Rate downstream=30/2.5=12m/hr

Rate in stillwater=(7.5+12)/2=9.75m/hr

- Algebra -
**Henry**, Saturday, June 12, 2010 at 9:51pm50. (x-1)(x^3+x^2+x)=x^4+x^3+x^2-x^3-x^2-x=x^4-x=x(x^3-1)

**Answer this Question**

**Related Questions**

Algebra - Need help with these please--- 2. A long distance phone company has a ...

math - I need help forming an equation for this word problem.. A long distance ...

Math - Word Problem - Word problems confuse me >_> You are choosing ...

Math - the international links long-distance phone company charges no monthly ...

Algebra 2 - "your long distance service provider charges you $.06 PER minute ...

Math - Global Telephone charges 30 dollars for monthly phone service, plus a ...

Algebra - You are choosing between two long distance telephone plans. One plan ...

math - 23. There are two telephone companies provide home phone service in New ...

Math - Long distance Phone Company A charges a base rate of $5.00 per month plus...

geometry - a phone company charges a flat monthly fee of $15 for cell phone ...