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January 30, 2015

January 30, 2015

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!!

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