Questions on Algebra: Proportions answered by real tutors!

Tutors Answer Your Questions about Proportions (FREE)

Question 281977: can you show step by step instructions on this problem? 30/x = 5/2
Click here to see answer by Alan3354(30966)

Question 282499: the scale of a map is 1/2 in.:8 mi. i need to find the actual distance for each map distance 2 in. if you just teach me how to do this one i can do the rest on my own !
Click here to see answer by user_dude2008(1861)

Question 282833: -3 1/4 - (1/2) need help with this

Click here to see answer by richwmiller(9135)

Question 282850: I=E/R SOLVE FOR E
Click here to see answer by user_dude2008(1861)

Question 282987: Suppose that a street light is 20 feet above the ground. How far from the street light is a 5 foot girl standing if she casts a 4 foot shadow?
Click here to see answer by scott8148(6628)

Question 283145: The weight of body varies inversely with the square of the square of its distance from the center of earth. Assuming that the radius of earth is 3960miles how much would a man weigh at an altitude of 1 mile above the earths surface?
Click here to see answer by Alan3354(30966)

Question 284832: On the blueprint of a house, 27 millimeters represents 8 meters. The actual length of the living room is 10 meters. What is its length on the blueprint?

Click here to see answer by Theo(3458)

Question 284914: a picture is 12ft.x9ft what are the dimensions in yards
Click here to see answer by user_dude2008(1861)

Question 285009: Phillip works for a computer store that pays a 12% commission and no salary. What will Phillip's weekly sales have to be for him to earn $360?
please help!!!!
Click here to see answer by hollytree(4)

Question 259863: a bicycle chain moves along two sprockets when you shift gears. the number of teeth on the front sprocket form a ratio. equivalent ratios provide equal pedaling power. find a ratio equivalent to the ratio 52 over24

Click here to see answer by richwmiller(9135)

Question 285625: It takes Amy twice as long to deliver papers as it does Nancy. How long would it take each girl to deliver the papers by herself if they can deliver the papers together in 32 minutes?

Click here to see answer by stanbon(57224)

Question 286175: evaluate P(11,4)
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Question 286172: tonya's zip code is 85762. How many zip codes altogether could be formed, each using those same five digits?
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Question 286177: Sean took 2 pair of shoes, 5 pairs of pants, & 6 shrts on a trip. Assuming all items are compatible, how many different outfits can he wear?
Click here to see answer by user_dude2008(1861)

Question 286178: Six people, three men and three women have reserved six seat in a row at a theater, starting at an aisle seat. In how many different ways can they arrange themselvesin the seats?
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Question 286201: Could you please help me? On this problem, I come up with two answers: 2 and 2.5. Which is correct? 0.5/a=1.25/5. A=? Please advise. Thank you.
Click here to see answer by Alan3354(30966)

Question 286205: Question please. If a house was purchased for $80,000, the property taxes were $1400.00. If improvements were made and the new home value is $120,000.00, what is the new property tax? What I came up with is 1400/80000= ? /120000= $2100.00. Is this correct? Please advise. Thank you.
Click here to see answer by josmiceli(9650)

Question 286875:

x+9 = x-10
---- ----
5 11

X+9 = X-10
Click here to see answer by checkley77(12569)

Question 287011: 4/9=x/18. solve for X
Click here to see answer by brucewill(101)

Question 287011: 4/9=x/18. solve for X
Click here to see answer by richwmiller(9135)

Question 287453: ratio of quizzes to tests is 6:1. Total of 77 semester grades, how many are tests?
A) 5 tests
B) 7 tests
C) 11 tests
D) 14 tests
I do not understand how to set this problem up. Can someone please point me in the right direction?

Click here to see answer by kmerlandson(3)

Question 288011: Which ratio does NOT form a proportion with twelve over ten?
eighteen over fifteen
twenty-six over twenty
sixty over fifty
thirty over twenty-five
Click here to see answer by Deina(147)

Question 288334: The prescribed dosage of a medicine varies directly with weight. If the dosage for a 120 pound person is 8 ml, what should the dosage be for a person weighing 210 pounds?
Click here to see answer by richwmiller(9135)

Question 288357: Find the value of x.
x%=x+6/200
Click here to see answer by Alan3354(30966)

Question 288718: 145% of what # 0f inches is 11.6 inches
Click here to see answer by checkley77(12569)

Question 288833: please help me to toget this: 3/x =x/3 or 9/x = x/1. also 3/45= 1/5x
Click here to see answer by brucewill(101)

Question 289294: 35 out of 50 bike injuries in the state last year were head injuries. Of each 10 bike injuries how many are to the head?
I tried to figure the proportion but can't quite get it...
THANKS!
Click here to see answer by stanbon(57224)

Question 289530: 8x^2+14x-15
Click here to see answer by Fombitz(13828)

Question 289836: if boys and girls are in the ratio 7:5 and boys is 8 more than girls calculate the total number of studens

Click here to see answer by richwmiller(9135)

Question 289990: please explain x/2 = 8/x.
Click here to see answer by Fombitz(13828)

Question 290387: How many liters of a 16% acid solution should be mixed with 20 liters of 50% acid solution in order to obtain a 36% solution?
Thank you!
Click here to see answer by richwmiller(9135)

Question 290551: 12 is what percent of 19?
Click here to see answer by richwmiller(9135)

Question 290559: 5.8 is 0.9 percent of what number?
Click here to see answer by checkley77(12569)

Question 290522: 12x-7 5x+18
______ = _______
4 3
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Question 291355: how do you right out proportions?
Click here to see answer by richwmiller(9135)

Question 291801: In printing an article of 48,000 words, a printer decides to use two sizes of type. Using the larger type, a printed page contains 1,800 words. Using a smaller type, a page contains 2,400 words. The article is allotted 21 full pages in a magazine. How many pages must be
in smaller type? ___________
Click here to see answer by checkley77(12569)

Question 291915: I am having trouble with some weird/difficult proportion questions~
6/25 is equal to e/80
e=?

Click here to see answer by Alan3354(30966)

Question 291915: I am having trouble with some weird/difficult proportion questions~
6/25 is equal to e/80
e=?

Click here to see answer by richwmiller(9135)

Question 292398: EXPLAIN WHY THE MULTIPLICATIVE INVERSE OF A NUMBER HAS THE SAME SIGN OF THE NUMBER?
EXPLAIN WHY THE ADDITIVE INVERSE OF A NUMBER HAS THE OPPOSITE OF THE NUMBER
Click here to see answer by richwmiller(9135)

Question 292411: a-2/6 = 6a-8/a
Click here to see answer by richwmiller(9135)

Question 293138: Please help me solve this equation:
Click here to see answer by richwmiller(9135)

Question 293641: Another ratio related to heart health is the ratio of LDL cholesterol to HDL cholesterol. The optimal ratio of LDL to HDL is below 3. If a patient's total cholesteral is 168 and HDL is 44, is the ratio optimal? Explain.
Click here to see answer by brucewill(101)

Question 294047: what is an algebraic proporttion?
Click here to see answer by nyc_function(2733)

Question 294190: How do you solve this proportion:
z is to 7, as 16 is to 56
It must be solved with algebra.
Click here to see answer by jim_thompson5910(28476)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970