Questions on Algebra: Proportions answered by real tutors!

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Algebra: Proportions

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Question 568: can you please send me some practice work on algebra? i'm having problem with problem like 2x + 4y= 8
6x + 12y= 24
Then it would ask question like, what is the value of Y? I do run into problem like 3x + 4y= 12, and 6x + 14y= 30, so what is the y + 10=
can you email how do problem like this
Click here to see answer by askme(9)

Question 528: 4 y Please show how to solve this equation
- 7 = -
5 10

Click here to see answer by askme(9)

Question 633: P1/T1 = P2/T2
solve for P2
Click here to see answer by lordacro(12)

Question 795: I need help on a proprtion,
2u-3/4u=u-1/u I did cross product method on this one and i got
2u(squared)-3u= 4u (squared)-4u then i isolated the u and the u (squared) and came out with u=2u(squared). I think i did this all right, but i'm not sure what the u would be. I missed this lesson in math becuase i'm on homebound school because of an illness i have. If you can please help me out i would appreciate it. Thank You.
Click here to see answer by pushpaharan(47)

Question 1021: 20% of what number is 8? How do you figure this? or how would you get the answer?
Click here to see answer by usyim88hk(157)

Question 2597: How would you solve a proportion of the typ 4/x = x/4?
Click here to see answer by longjonsilver(2297)

Question 2597: How would you solve a proportion of the typ 4/x = x/4?
Click here to see answer by kiru_khandelwal(79)

Question 2624: I understand how to solve proportions but what I am having trouble with is if I have a question such as what is 25% of 48. Can you help me?

Click here to see answer by malikul(1)

Question 2644: solve a proportion for x. 2x-5/x+2=3x-5/3x-1
Click here to see answer by kiru_khandelwal(79)

Question 2766: (-3/(w+2))=(w/(w+2))
Click here to see answer by kiru_khandelwal(79)

Question 2860: how do I solve this with step by step solution?
square root of (5x^2-9)=2x

Click here to see answer by xcentaur(357)

Question 2663: I need help on a proportional problem that I seen on the internet and I need it to be explained to me in lamen terms EXAMPLE:12/24=X/100 how do you determine the answer for the variable "x"?
Click here to see answer by xcentaur(357)

Question 3110: If x is 5.6 and y is 140 and x varies directly with y, find x when y is 80.
Click here to see answer by stop12345now(6)

Question 3608: solve for v if fc=mv^2/r
Click here to see answer by Zenock(15)

Question 4063: If y varies directly as x, and y = 9 when x = 12, find the value of y when x = 7.
Click here to see answer by gsmani_iyer(161)

Question 4629: Solve the proportion please:
5/6 = a-2/4
Click here to see answer by xcentaur(357)

Question 4630: Solve the proportion please:
y+4/y-1 = 4/3
Click here to see answer by xcentaur(357)

Question 4631: z+7/6 = z-3/7
Click here to see answer by rapaljer(3622)

Question 4750: i'm studying for my ged and i'm haveing trouble with the the math. i'm really bad at graphing and other things. so please help me learn math or i'll never pass.

always allie
Click here to see answer by longjonsilver(2297)

Question 4781: I am having trouble solving the proportion for: x-4 divided by 5 = 2x + 3 divided by 9

Click here to see answer by arunpaul(104)

Question 4727: 2x+5/2 < x/2-2
Click here to see answer by arunpaul(104)

Question 5330: what is the equation for __ is what percent ___? for example: 7 is what percent of 28?
Click here to see answer by CharStar(110)

Question 6024: Ruth bicycles 5km/h slower than bill. In the time that it takes Ruth to bicycle 42km, bill can bicycle 57km. How fast does each bicyclist travel?
Click here to see answer by Abbey(339)

Question 6300: i need to solve this proportion: x/5 = 4/x+1. I get to then i'm stuck.
Click here to see answer by minerva(22)

Question 6353: I'm having trouble solving the equation: (x -7):(x+7) = 2:9.

Click here to see answer by prabhjyot(164)

Question 6667: 1.the angle of elevation of the top of a flag post from a point on the ground level 40m away from the flag post is 60 degree. find the hieght of the post
Click here to see answer by fawadhaider(1)

Question 6849: Can u please help me solve this equation on quadratic equations: 5k^2+17k+6=0
I can do the quadratic equations without a constant infront of the k but i cant do the ones with a number infront of the k. I would be grateful if u could help me
Thanks
Click here to see answer by longjonsilver(2297)

Question 6941: when was algebra discoverd?
who discoverd algebra and how?
how was algebra applied?
how has algebra developed or advanced over the years?
Click here to see answer by longjonsilver(2297)

Question 7466: -6(4-3x)-18+4
TRIED -(6)x4 -6(3x) - 18 + 4x
-24 + 18x - 18 +4x
now lost

I am just returning to college after almost 25 years. I get stuck on a few problems but the rest are a breeze. I think I'm on the right track. Have two more I'm stuck on. Please explain if you have the time
1/4d + 2 - 3/5d + 5
last one.....
5/6x - 1/3 (2x-6)

Thanks!
Click here to see answer by longjonsilver(2297)

Question 7597: i have a problem... 2/7=x/-42
I know you cross multiply
7x=-84
x=-84-7
x=-91
Im i right?
Click here to see answer by ichudov(404)

Question 7848: i have been out of school for 12 years and need a hand on this act practice question f(x)=3xsquared+4,f(x+1)=
Click here to see answer by Earlsdon(4900)

Question 8290: name the property of 2+3=3+2
Click here to see answer by bonster(299)

Question 8288: name the property of 2+3=3+2
Click here to see answer by bonster(299)

Question 8505: Is the answer to 12.4/10=x/11,000,000 x=136,400?
Click here to see answer by bonster(299)

Question 9092: similar triangles are congruent?(tha answers are.... always,never,sometimes,or none of these) thank you.
Click here to see answer by longjonsilver(2297)

Question 9232: complete this proportion:6/8=15/w(the possibilitesare.........20, 60, 120, or none of these)
Click here to see answer by longjonsilver(2297)

Question 9232: complete this proportion:6/8=15/w(the possibilitesare.........20, 60, 120, or none of these)
Click here to see answer by rapaljer(3622)

Question 9233: equal fractions have equal.....denomitors,numerators,cross products,or none of these?
Click here to see answer by rapaljer(3622)

Question 9583: Help its a prorportion questionr th and i cant seem to figure it out
Here it is
The leaf cutter ant is about 1.27 cm long and takes strides of 0.84 cm. If a person could take proprtionally equivalent strides, what size strides would a 1.65-m-tall algebra studemt take?
Help please!!!
Click here to see answer by prince_abubu(198)

Question 10589: A tube has volume of 6(pi)r^3. A box has volume 48r^3
how do you find ratio of vol. of tube to vol. of box.
Thanks
Click here to see answer by rapaljer(3622)

Question 11253: My son homework is on proportions. Example:
If 2 adults are needed for every 15 students, how many students are needed for 180 students?
2 ?
- = -
15 180
15? = 360
? = 24
First of all, can't I reduce...cancel out the 2 for a 1 and the 180 for 90. If I do then the number changes. Am I suppose to cancel out numbers? Why/why not?
Click here to see answer by roxy9229(32)

Question 11797: Bill worked 5hrs. as a landscaper and earns 53.25, if he works 8hrs. how much does he earn? Answer is 85.20.
How do we right this as a proportion?
Click here to see answer by rapaljer(3622)

Question 12142: A picture has a ratio of length to width of 8 to 5. If the width is 35 cm, calculate the length of the picture.
I know how to do proportions but I have no idea when it comes to propotions with word problems.
Click here to see answer by rapaljer(3622)

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