Questions on Algebra: Proportions answered by real tutors!

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Question 270375: How do you work this problem. It says to give all values of x. "The geometric mean of x+1 and 12x is 6x."
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Question 270714: If a 140lb person burns 320 calories in 4 miles how many miles to burn 100 calories?
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Question 270972: 7.7meters/1.4meters=x/1meters
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Question 270971: 1/2/8=10/x
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Question 271607: "Yolanda and Yoko ran in a 100-yd dash. When Yolanda crossed the finish line, Yoko was 10-yd behind her. The girls then repeated the race, with Yolanda starting 10-yd behind the starting line. If each girl ran at the same rate as before, who won the race? By how many yards?"
I am a parent who was trying to help her son with his homework. When working on this problem, I had Yolanda running at 100-yd per hour and Yoko at 90-yd per hour. (Just to make the problem easier to solve) My solution has the girls actually meeting up at the 90-yd line, but then Yolanda overtakes Yoko and still wins the race by 1/10 of a yard. However, my son's teacher told him that the girls ended the second race in a tie. Could someone please help me with this? Thank You!

Click here to see answer by mananth(16946) About Me 
Question 271607: "Yolanda and Yoko ran in a 100-yd dash. When Yolanda crossed the finish line, Yoko was 10-yd behind her. The girls then repeated the race, with Yolanda starting 10-yd behind the starting line. If each girl ran at the same rate as before, who won the race? By how many yards?"
I am a parent who was trying to help her son with his homework. When working on this problem, I had Yolanda running at 100-yd per hour and Yoko at 90-yd per hour. (Just to make the problem easier to solve) My solution has the girls actually meeting up at the 90-yd line, but then Yolanda overtakes Yoko and still wins the race by 1/10 of a yard. However, my son's teacher told him that the girls ended the second race in a tie. Could someone please help me with this? Thank You!

Click here to see answer by richwmiller(17219) About Me 

Question 272034: Solve T=gr + gvt for g
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Question 272412: if y varies directly as x and inversely as z, find y whe x=3 and z=2, if y=90 when x=30 and z=1.5
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Question 272699: An image of a building in a photograph is 6 centimeters wide and 11 centimeters tall. If the image is similar to the actual building and the actual building is 174 meters wide, how tall is the actual building, in meters?
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Question 272705: 24 is ____% of 40.
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Question 273133: 75 is what percent of 250? How do you find that answer?
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Question 273127: How do you figure out 80% of 20?
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Question 273766: If (x,4) is a solutionto the equation 5x-3y=13, what is the value of x?
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Question 273803: rotation of ferris wheel takes 15 min. what is the angle of rotation after 3 min. 5 min. 9 min. and 12 min. do i take 15 over 360 and 3 over a?
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Question 274047: Quadratic Functions:
"The height of a ball thrown straight upward is measured by the function h(t)=-16t^2+40t, where h(t) is measured in feet and t is time in seconds."
A) Evaluate h(1) and explain what the dependent and independent variables represent.
B) What is the height of the ball after 2.5 seconds?
C) When is the ball at a height of 48 ft.?
D) When will the ball hit the ground?
* I have answered the first part of (A), getting a solution of 24. I am not sure what the dependent and independent variables are.
*I have solved (B) for an answer of 0.
*For part (C), I am not sure how to go about solving this backwards.
*For part (D), I can't even begin to know what to do. How should I go about solving for this, do I even have enough information?

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 274337:
how do you show your work when trying to figure out how many yards are in 1,200 feet?

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Question 274392: 2/9b = b/18
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Question 274901: if for every 50 students 3 teachers are needed,how many teachers are needed for 5400 students
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Question 275044: there are 450 students and 15 teachers in a school. The school hires 2 new teachers. To keep the student to teacher ratio the same, how many total students should attend the school?
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Question 275507: a 2004 Chevy S-10 pick up truck with a 4.3 liter engine is rated to get 19 miles per gallon(highway driving). how far can it travel on 14.2 gallons of gas?
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Question 275506: a 2004 Chevy S-10 pick up truck with a 4.3 liter engine is rated to get 19 miles per gallon(highway driving). how far can it travel on 14.2 gallons of gas?
Click here to see answer by Theo(13342) About Me 

Question 275637: What are the two x values?
x+3/12=6/x-3

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Question 275627: If 27 out of 30 people passed a driving test,what percent failed?

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Question 275779: The ratio of Taylor's CD to Dave's CD is 7 to 8. If they have a total of 150 CD's. How many CD's does Taylor have?
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Question 275865: TWO PERCENT OF THE JAZZ RECORDS SOLD IN APRIL WERE FROM THE NEW LABEL.ABOUT HOW MANY RECORDS WERE FROM THE NEW LABEL?
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Question 275865: TWO PERCENT OF THE JAZZ RECORDS SOLD IN APRIL WERE FROM THE NEW LABEL.ABOUT HOW MANY RECORDS WERE FROM THE NEW LABEL?
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Question 275933: montage and Luisa are rewriting the scale 1 in: 2ft in a:b form who is correct? montega 1:36 or luisa 1:24
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Question 276142: I am trying to figure out the solution to the question
95 is 90% of what number.
Do I divide or multiply
95* 90%=85.5
95/90%=105.56
I get confused

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Question 277171: what is 3/4 minus 1/3
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Question 277171: what is 3/4 minus 1/3
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Question 277537: A tree casts a shadow of 100 inches while a 7 inch branch casts a shadow of 10 inches, how tall is the tree?

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Question 277608: Company INC is making baseball gloves. Last month, with 60 workers, they made 1000 gloves. If they hire 15 more workers this month, how many gloves can be made at the same rate? What would my equation look like to solve this?
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Question 277608: Company INC is making baseball gloves. Last month, with 60 workers, they made 1000 gloves. If they hire 15 more workers this month, how many gloves can be made at the same rate? What would my equation look like to solve this?
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Question 277666: By installing a $120 thermostat that reduces the temperature setting at night, a family hopes to cut its annual bill for heating oil by 8 percent, and thereby recover the cost of the thermostat in fuel savings after 2 years. What was the family's annual fuel bill before installing the thermostat?
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Question 278168: if Paul can paint a fence in 2 hours and Fred can paint a the same fence in 3 hours.How long would it take for Fred and Paul to paint the fence together.
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Question 278451: The sum of two numbers is 63 and the difference is 13 . What are the numbers?
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Question 279316: I need help please. Is 76/24 equal to 19/6? I need to know if the fractions are proportional. What I came up with is Yes, there are becuase they both equal 456. Is this correct? Please advise. Thank you.
Click here to see answer by checkley77(12844) About Me 

Question 279317: I need to write this fraction as a percent. 5/11 (to the nearest tenth of a percent). I came up with 45.5%. Is this correct? Please advise. Thank you.
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Question 279914: rate and unit rate
A 50-lb bag of Glossy Coat Horse Feed costs $23.50. A 25-lb bag costs $15.50. How much money per pound would you save by buying the bag with the lower unit price?

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Question 280035: -
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Question 280120: on each field how much playing area is outside indicated part. round to nearest whole number if necissary.
1. a professional basket ball court, outside the 2 rectangular free throw lanes, ea 19ft by 14ft
there is a graph of a proffessional basketball court in book, i dont know if I use this in figuring. can you help me please??
the graph is length 94ft, width 50ft and we had to find area, which is 4700ft

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Question 279995: There are 480 dishes that need to be rinsed. John can rinse them in 80 minutes by himself. It will take his friend Bob 120 minutes to rinse these dishes. How long will it take them if they rinse these 480 dishes together?

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Question 279993: There is a sales tax of $22 on an item that costs $275 before tax. A second item costs $87.50 before tax. What is the sales tax on the second item?

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Question 280412: A technician has been given 100ml of a 10% acetic acid solution. The pharmacist asked the technician to dilute the solution of 500 ml with sterile water and to label the solution. What percent should appear on the label?
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Question 280383: what is the solution for b/3=4/12
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