Homework Help: algebra

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

could someone check these answer please?
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 5:03pm
first 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 5:15pm
Thanks again Reiny!!

Answer this Question

Related Questions

college - Let x be the number of miles driven on 60 gallons of gas. By setting ...
7th grade math Ms. Sue please check - #1 Write the ratio in the simplest form. ...
Math - Daniel Filled the gas tank in his car with 14.6 gallons of gas. He then ...
algebra - The average gas consuption of Angels SUV is 21 miles per gallon. Jeffs...
college - Using the Library, web resources, and/or other materials, find the gas...
college - Let x be the number of miles driven on 60 gallons of gas. By setting ...
math - Let x be the number of miles driven on 60 gallons of gas. By setting up ...
Math - Mr. quark drove his car 314 miles in 6.5 hours. He used 12.7 gallons of ...
math - Solve the proportion using cross products. 20 Miles 15 Miles ________ = ...
programming - I am in a beginners class in computer programming and we have been...

For Further Reading

First Name:
School Subject:
Answer: