Questions on Algebra: Proportions answered by real tutors!

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Question 198425: A man mixes peanuts selling at 40 cents a pound with cashew nuts selling at 70 cents a pound to make a 50-pound mixture which he sells at 52 cents a pound. How many pounds of each kind of nuts must he mix?(Only an algebraic solution will be accepted.)
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Question 198903: The lengths of the sides of a triangle are 12,15,and 20.If the length of the shortest side of a similar triangle is 3, find the length of the longest side of that triangle.
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Question 199279: 3 7
5t+-=3t--
4 8

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Question 199303: 14/1=y/56
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Question 199468: Mrs Lim has sponsored a total of 105 hot dogs and 126 cans of fruit juice for the refreshment of a classic picnic . Each student will receive the same amount of refreshment .
a) what is the greatest number of students who will get the refreshment ?
b) how many hot dogs will each student get?
c) how many cans of fruit juice will each receive?

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Question 199830: Please help me with this story problem: the reciprocal of a number equals the reciprocal of the difference of 4 and a number. Find the number
thank you!

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Question 199917: A recent magazine article indicated that 47% of the general consumer population in the United States is loyal to the automobile manufacturer of their choice. Suppose Chevrolet did a study of a random sample of 1006 Chevrolet owners and found that 490 said that they would buy another Chevrolet.
Does this indicate that the population proportion of consumers loyal to Chevrolet is more than 47%??
Use level of significance of 0.01

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Question 199988: Build each rational expression into an equivalent rational
expression with the indicated denominator. -7yt / 3x = ? / 18xyt

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Question 200020: please help me solve this problem thanks!
solve for x
2/x^2-6x+8 - 3/x-4 = 7/x-2

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Question 200285: If distance is the constant, the formula Distance = Rate x Time has a __________ relationship.
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Question 200410: Keiko bicycles 4 km/h faster than javier. In the same time it takes Javier to bicycle 30 km, Keiki can bicycle 42 jm. How fast does each bicyclist travel?
javier travel ?
Keiko travels ?

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Question 200410: Keiko bicycles 4 km/h faster than javier. In the same time it takes Javier to bicycle 30 km, Keiki can bicycle 42 jm. How fast does each bicyclist travel?
javier travel ?
Keiko travels ?

Click here to see answer by RAY100(1637) About Me 

Question 200405: sue can shovel snow from her driveway in 40 minutes. Jim can do the same job in 50 minutes. How long would it take Sue and Jim to shoved the driveway if they worked together?
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Question 200510: There are 7 girls in a bus. Each girl has 7 backpacks. In each backpack, there are 7 big cats. For every big cat there are 7 little cats. ( There is no Bus driver.) How many legs are there in the bus?
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Question 200510: There are 7 girls in a bus. Each girl has 7 backpacks. In each backpack, there are 7 big cats. For every big cat there are 7 little cats. ( There is no Bus driver.) How many legs are there in the bus?
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Question 200793: how do you do ratio tables
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Question 200933: If subsatance X to substance Y is in proportion 1:1.5 what is the ratio in percentage from substance X to Y ?

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Question 201295: If the ratio of the corresponding diagonals of two similar figures is 4 : 9 ,then what is the ratio of their perimeters?
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Question 201539: Listed below are 5 functions each denoted g(x) and each involving a real number
x
constant c>1. If f(x)=2 , which of these 5 functions yeilds the greatest value for f(g(x)), for all x>1?
A. g(x)= cx
B. g(x)= c/x
C. g(x)= x/c
D. g(x)= x-c
E. g(x)= log x

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Question 202448: The distance traveled at a constant speed is directly proportional to the time of travel. If Olivia traveled 112 miles in 3.5 hours, how many miles will Olivia travel in 8.9 hours at the same constant speed?
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Question 202910: Albert Pujols is hitting 351 home-runs in 4885 at-bats. Alex Rodriguez is hitting 570 home-runs in 8059 at-bats. At Albert Pujols rate, how many home-runs will he have when he reaches 8059 at-bats? How many at-bats will it take him to reach 570 home-runs?
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Question 203049: In a zoo the ratio of giraffes to apes is 6 to 5 and the ratio of apes to zebras is 4 to 1. What is the minimum number of zebras the zoo could have?
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Question 203297: A new virus is released on the internet: the adminstrator of a department's Local Area Network (LAN) is given five minutes by a manager to estimate the impact. The adminstrator samples 12 of the PCs connected to the LAN and finds that 7 are infected. Use proportion to estimate the number of infected PCs if there are a total of 216 PCs connected to the LAN.
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Question 203409: The ratio of domestic stamps to foreign stamps in John’s stamp collection is 3:1. If John sold thirty of his domestic stamps, the ratio of domestic stamps to foreign stamps would be 1:2. How many foreign stamps does John have in his collection?
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Question 204057: Two corresponding sides of similar polygons are in the ratio of 2: 3. If the perimeter of the smaller figure is 6 meters, what is the perimeter of the larger figure?
Thank you for your time and your help.

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Question 204231: Two numbers are in the ratio 9:13.if the large number is 390.find the number.
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Question 204368: if A:c=1:3 and b:c=5:7,find a:b and a:b:c.
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Question 204755: Can you please help me find the dimensinos of a rectangle with the great area whose perimeter is 30 feet. I made an educated guess and made possible solution sets for the higher possible number combinations. From that I saw that the solution should be between 7 and 8 ((7,8) and (8,7) solution sets give me the 30 foot perimeter and the highest area as whole numbers). Visualizing, I am thinking that there has to be a maximum of a parabola, and that, since this is a real object, the negative side of the axis would not apply. I just don't know what to put together to the equation I feel must exist if say, the question involved a perimeter of 150 feet, with a great many more possble solution sets. Does this tie into Geometry and the area of a square being the greatest perimeter of rectangles of identical perimeter or something?
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Question 204773: sixty newspapers cost $27.find the cost for 16 newspapers????????? :*(
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Question 204947: If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa and Tom worked together to complete it ?
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Question 205170: To determine the number of deer in a game preserve, a conservationist catches 892 deer, tags them and lets them loose. Later, 312 deer are caught; 156 of them are tagged. How many deer are in the preserve?
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Question 205345: There are 120 people staying at the STAR hotel. The ratio of adults to children is 3:2. The ration of females to males is 5:1 for adults and 1:1 for children. How many adult males are staying at the hotel?
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Question 205393: A particular cake recipe serves 5 people, and calls for 1.5 cups of flour and 2 cups of sugar. Andre searches his cupboards, and finds 4.5 cups of flour, and 8.5 cups of sugar. If he uses the recipe to bake the largest cake possible with these ingredients, how many people will it serve?
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Question 205536: steps to factor 12a^2 + 84ab + 147b^2
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Question 205536: steps to factor 12a^2 + 84ab + 147b^2
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Question 205658: please help.. they are indirect and direct variations, please show work.. asap
3.If y varies directly with x, and y = 8 when x = 16, find y when x = 46.
5. If y varies directly with x, and y = 2 when x = 4, find y when x = 45.
i got this k=2/4=1/2(45)y=90
7.If y varies indirectly with x, and y = 10 when x = 25, find y when x = 35.
i got k=10/25=2/5(35)y=14
some one please help me i really need to understand these problems they are due tonight. thanks a bunch if some one will help me//

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Question 205725: Clearing fractions; 1/2 * 4m - 3m - 5/2 The result I get is m - 2?
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Question 206385: Find the length of a rectangular lot with a perimeter of 108 meters if teh length is 8 meters more than the width.
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Question 206386: You are traveling to your aunts house that is 234 miles away. If you are currently twice as far from home as you are from your aunts, how far have you traveled?
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Question 206445: You are traveling to your aunt's house that is 234 miles away. If you are currently twice as far from home as you are from your aunt's, how far have you traveled?
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Question 206561: How can I use 4 of these numbers each to write proportions.
1. 45,16,12,11,33,4
2. 18,30,1,10, 3,22
3. 5,25,48,56,5,1
4. 44,9,4,33,32,3

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Question 206669: can you please help me?? i dont remember any of this!!
A floodlight at ground level 6 feet from a bush 4 feet tall cast a shadow of the bush on a building tha is 24 feet from the bush. What is the height of the shadow

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Question 206706: A car dealer advertised a big sale by stretching a string of banners from the top of the building to the edge of the driveway. If the building is 26 m high and the driveway is 43 m from the building, how long is the string of banners?


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Question 206793: A car dealer advertised a big sale by stretching a string of banners from the top of the building to the edge of the driveway. If the building is 26 m high and the driveway is 43 m from the building, how long is the string of banners?
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Question 206907: For a certain time period the ratio of the dollar value of exports to the dollar value of imports for the United States was 2 to 3. If the value of exports during that time period was 48 billion dollars, then what was the value of imports?
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