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 Algebra Pre-Algebra and Basic Algebra Math Forum

 September 27th, 2009, 07:05 AM #1 Newbie   Joined: Sep 2009 Posts: 23 Thanks: 0 can anyone tell me if i'm correct 1. write the relationship of 8 cubic feet to 3 cubic feet as a ratio: answer 8:3 2. write as a ratio in simplest form: 12 cubic feet to 16 cubic feet. answer 3:4 3. solve for the unknown in the proportion: x/4=2/3 answer 8/3 4. solve for the unknown in the proportion: y/3=3/4 answer 9/4 5. solve for the unknown in the proportion 5/2x=3/6 answer 5 6. a taxpayer pays a state tax of $600 on an income of$24,000. what is the proportional tax on an income of $36,000? answer$9,000 7. a consumer report has determined that 2 out of 5 sedan owners have an SUV as well. how many SUV owners are there among 50,000 sedan owners? answer 20,000 8. we want to cover a wall with 200 sq ft of acoustic material. each 16 sq ft panel costs $50. what is the cost to cover the entire wall? answer$625 in a table where y varies directly as x what is the missing value? x 3 5 8 14 and y 9 __ 24 42 answer 15 9. if y varies as x for the expression: f(x) = 4x, then four is the constant of variation, (k). answer true 10. express the chance you have of getting heads in a coin toss with a fair coin as a probability. answer 1/2 seemed pretty simple but the choices were 2/25, 2/1, 1/2, or 20% i thought it might of been some kin of trick question 11. if a single six-seded die is thrown, what is the probability of getting a 5 or a 6? answer 2/5 12. if y varies inversely as x, and k= -24, what is y when x=6? answer -14 13. if y varies directly as x, and y = 1/3 when x=4, write an equation for this relationship: answer y=4/3x September 27th, 2009, 10:53 AM #2 Senior Member   Joined: Mar 2007 Posts: 428 Thanks: 0 Re: can anyone tell me if i'm correct I don't like doing all of someone's work; too lazy, I guess. However, at a quick glance over... #6 should be 900. #11 would be either 1/6 + 1/6 or 1/6 * 1/6. You check which according to the rules you were shown. #12, #13 are wrong. #12 might be a typo, but you should show the steps on how you get to your answers if you want any real help. ...and not so many at once please. September 27th, 2009, 11:55 AM #3 Newbie   Joined: Sep 2009 Posts: 23 Thanks: 0 Re: can anyone tell me if i'm correct thanks....the main one i wasn't sure about was 11..my choices were 1/2, 2/5, 2/3, or 1/3 Tags correct Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Similar Threads Thread Thread Starter Forum Replies Last Post r-soy Algebra 5 May 21st, 2012 04:15 PM oti5 Algebra 2 March 19th, 2012 01:47 PM r-soy Algebra 1 March 1st, 2012 11:05 AM balste Advanced Statistics 2 September 3rd, 2009 11:20 AM r-soy Calculus 1 December 31st, 1969 04:00 PM

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