Thursday

August 21, 2014

August 21, 2014

Posted by **lee** on Sunday, October 31, 2010 at 3:18pm.

solve the following proportion for x.

x/8=5/3=0

rueben drove 300 miles using 14 gallons of gas, at this rate, how many gallons would he need to drive 210?= 40.3 gallons

solve for v; v^2+v-30=0=v=-6,5

thanks

- algebra -
**Reiny**, Sunday, October 31, 2010 at 5:03pmfirst one:

x/8 = 5/3

3x = 40

x = 40/3

Your second answer should have appeared illogical to you.

If he uses 14 gal to go 300 miles, how could he use about 3 times that much to go only 210 miles

300/14 = 210/x

300x = 14x210

x = 14x210/300 = 9.8 gallons

third is correct

- algebra -
**lee**, Sunday, October 31, 2010 at 5:15pmThanks again Reiny!!

**Related Questions**

algebra - Lucy drove 225 miles using 10 gallons of gas. At this rate, how many ...

math - rachel drove 260 miles using 12 gallons of gas. at this rate, how many ...

7th grade math Ms. Sue please check - #1 Write the ratio in the simplest form. ...

math(CHECK ANSWERS) - please check my answers. Mrs. Walters drove 160 miles on 5...

college - Let x be the number of miles driven on 60 gallons of gas. By setting ...

math(help) - can anyone answer these 3 answers showing how your work.thanks Mrs...

math***help plz*** - please help me with math. A car travels 132 miles using 4 ...

algebra - a trip of 120 miles required 7 gallons of gas. at this rate how many ...

math - I used 8 gallons of gas when I drove for 240 miles. How many gallons of ...

Math - A car travels 172 miles using 7 gallons of gas. At that rate, how far can...