Questions on Algebra: Proportions answered by real tutors!

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Question 469736: -3/4=n/16
Click here to see answer by edjones(7569)

Question 471466: Use the formula for the area of a circle A = pier2 to determine which is a better deal. A 14 inch pizza for $10.50 or 16 in pizza for $11.95. Use 3.14 for pie
Click here to see answer by mananth(12270)

Question 471519: If a person drives 4,000 miles in 8 months, how many miles will that person drive every 2 years?

Click here to see answer by ewatrrr(10682)

Question 471519: If a person drives 4,000 miles in 8 months, how many miles will that person drive every 2 years?

Click here to see answer by Tatiana_Stebko(1326)

Question 471538: Find the LCM
x^3+8x^2+16x, x^2-8x
Answer in this form ?(?)^2(x-?)
Click here to see answer by poliphob3.14(115)

Question 471619: 1) if you lean a ladder againist your house on level ground then how high will your ladder reach if it is 26 feet long and you set it 10 feet from the wall?
2)A cycle engine used a gas to oil mixture of 20:1. If you are to use 20 ounces of oil, then how many gallons of gas will you use (1 gallon is 128 ounces)?
Click here to see answer by jorel1380(2518)

Question 471461: What can be concluded about the width of a rectangle if the ratio length to perimeter is 1 to 3? Make sketches and explain your reasoning.
Click here to see answer by bucky(2189)

Question 472609: 18 men can dig a ditch in 10 days. After they have worked for 4 days how many more men shall be employed to complete the work in 4 days from then?
Click here to see answer by ankor@dixie-net.com(15660)

Question 472703: x=by+cz
y=cz+ax
z=ax+by
prove a/1+a + b/1+b + c/1+c = 1
pls help with solution...thanks
Click here to see answer by richard1234(5390)

Question 472703: x=by+cz
y=cz+ax
z=ax+by
prove a/1+a + b/1+b + c/1+c = 1
pls help with solution...thanks
Click here to see answer by robertb(4012)

Question 473315: I need to helpmy daughter with proportions she's at a summer program. She needs to solve in Ax+By=C no fractions
#1 3y+9x-18=0
#2 6y-2x=8
#3 y=9x+12

#1 I thinks is y=3x+6 she said no it's not in Ax+By=C is it -3x+y=6
Thank you please tell me how to solve so I can explain it to her.

Click here to see answer by Tatiana_Stebko(1326)

Question 473347: alina read 56 pages in 3 hours.at same rate,find the number of hours it will take her to read the remaining 140 pages?
Click here to see answer by edjones(7569)

Question 473921: which is larger 18% of 212 or 1.8% of 2121
Click here to see answer by robertb(4012)

Question 473925: solve the proportion 8/N = 14/24
Click here to see answer by algebrahouse.com(1079)

Question 473918: 32/x = 2/3
Click here to see answer by Maths68(1474)

Question 474037: how would you solve these types of proportion problems? i am confused, so please tell step by step!!!

1) x+2/5 = 4/x+1
2) 2/x-3 = x-2/6
Click here to see answer by ewatrrr(10682)

Question 474661: it takes 7 painters to paint 3 homes . how many painterss can paint 10 homes
do I cross multiply ?
Click here to see answer by stanbon(57387)

Question 476289: How can $3,960 be invested, part of it at 4% and the remainder at 5%, so that the two investments will produce the same amount of interest?
Click here to see answer by stanbon(57387)

Question 476490: I need help with the following problem:
The product of two consecutive positive even numbers is 624, what are the numbers?
I cannot find this anywhere in my book. Thanks so much!
Click here to see answer by mananth(12270)

Question 476947: Solve. Please show all of your work.
A triangular lot has a perimeter of 1900 feet. One side is 200 feet longer than the shortest side, while the third side is 500 feet longer than the shortest side. Find the lengths of all three sides
Click here to see answer by Theo(3464)

Question 478482: Ratio of lemon to water to be mixed to prepare lemon juice is 3:5.For 12 lemons the number of cups of water to be used is

Click here to see answer by rfer(12670)

Question 479145: if ratio of two numbers "a" and "b" is 3 to 4 and their sum is 420. Find a-b
Click here to see answer by Tatiana_Stebko(1326)

Question 479297: Andrew can do a piece of work in r days and bill. who works faster, can do the same work in S days. which of the following expressions, if any, represents the number of days the two of them would take to do the work if they worked together?
Click here to see answer by stanbon(57387)

Question 479305: one boy can deliver newspapers on his route in 1 1/4 hours. Another boy who takes his place one day takes 15 minutes longer to deliver these papers. How long would it take to deliver the papers if the two boys worked together?
Click here to see answer by stanbon(57387)

Question 479378: What is your mile time if you ran a mile and a half in 14 minutes?
Click here to see answer by edjones(7569)

Question 480595: In a basketball tournament each game last1 1/4 hours. In a 24 hour period what is the maximum number of games that can be played
Click here to see answer by stanbon(57387)

Question 480979: what is a factor of -252 whose sum is 29

Click here to see answer by Alan3354(30993)

Question 481709: (x+y)/(3a-b)=(y+z)/(3b-c)=(z+x)/(3c-a)
prove that
(x+y+z)/(a+b+c)=(ax+by+cz)/(a^2+b^2+c^2)
Click here to see answer by mananth(12270)

Question 482133: how to get the proportion 40 feet is to 140 as 6 feet is to 21
Click here to see answer by mathstutor494(95)

Question 482165: Austin runs 6 miles in 45 minutes. At the same rate, how many miles would he run in 18 minutes?

Click here to see answer by edjones(7569)

Question 482472: Two persons are to run a race, but one can run 10 meters per second, whereas the other can run 6 meters per second. If the slower runner has a 70-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time?

Click here to see answer by mananth(12270)

Question 482471: (2x-1) (x^2+3x-3)=

Click here to see answer by rfer(12670)

Question 483308: So I forgot how to do my proportions, and am not completely sure how to solve a problem as follows:
10:y::3:5
Any suggestions?
Click here to see answer by Earlsdon(6287)

Question 483501: how to solve x/3=x+2/5

Click here to see answer by jim_thompson5910(28598)

Question 482750: solve the proportion
Click here to see answer by bucky(2189)

Question 484745: A profit of $2400 is to be divided among three people in a 7:3:2 ratio. How much should each person receive?
Click here to see answer by Deina(147)

Question 484770: (2x+3y)(x-y)
Click here to see answer by Tatiana_Stebko(1326)

Question 484777: . There are pepsi 1 litre & oil 1 litre .it is given as 1 spoon of pepsi is aken and is mixed with Oil. Then 1 spoon oil&pepsi is taken and is mixed with pepsi then which of the condition holds true.
Click here to see answer by Alan3354(30993)

Question 485617: 22 miles/hour = _____feet/second
Click here to see answer by Alan3354(30993)

Question 485807: when the cost of the car is multiplied by 0.05 the result $1760. find the cost of the car
Click here to see answer by rfer(12670)

Question 485824: 4/7x = 4/5
Click here to see answer by rfer(12670)

Question 486149: In a picture of an ant the length is 6.5 centimeters. The actual size of the ant is 1.3 centimeters. What is the scale of the illustration?
Click here to see answer by chessace(471)

Question 486148: using dimensional analysis and convert the rate 12 feet/second = _____________yards/minute
Click here to see answer by chessace(471)

Question 486344: a fishing boat lowers a net from the surface of the ocean the expression d = 2t represents the depth of the net in feet after (t) seconds which integer represents the depth of the net after 8 seconds

Click here to see answer by Tatiana_Stebko(1326)

Question 486713: If the unemployment rate is 5.8% and there are 23,200 unemployed how many are working?
Click here to see answer by Tatiana_Stebko(1326)

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