Questions on Algebra: Proportions answered by real tutors!

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Question 1055233: Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k.
k=?
Use y=kx to find y when x=8
y=?

Click here to see answer by josgarithmetic(39616) About Me 
Question 1055233: Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k.
k=?
Use y=kx to find y when x=8
y=?

Click here to see answer by MathTherapy(10551) About Me 
Question 1055233: Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k.
k=?
Use y=kx to find y when x=8
y=?

Click here to see answer by ikleyn(52776) About Me 

Question 1055559: Three eggs are required to make two dozen muffins how many eggs are needed to make 12 dozen muffins
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Question 1055576: The distance coverd by a car traveling at a constant speed is directly proportional to the time spent traveling. If the car goes 75 miles in 5 hours, how far will it go in 7 hours?
Click here to see answer by ikleyn(52776) About Me 

Question 1056212: In a park, the ratio of adults to children is 12 to 11. If there are 368 people at the park, how many children are there?
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Question 1056503: Product A is a 12-ounce bottle of generic mouthwash that sells for $1.89. Product B is a 24-ounce generic mouthwash that costs $2.79. Which is the better buy?
Click here to see answer by josgarithmetic(39616) About Me 

Question 1056685:
One canned juice drink is 30​% orange​ juice; another is 10​% orange juice. How many liters of each should be mixed together in order to get 20L that is 23​%
orange​ juice?

How many liters of the 30​% orange juice should be in the​ mixture?

Click here to see answer by josgarithmetic(39616) About Me 

Question 1056688: The owner of Nuts2U Snack Shack mixes cashews worth $6.00 a pound with peanuts worth $2.30 a pound to get a​ half-pound, mixed-nut bag worth ​$1.70.
How much of each kind of nut is included in the mixed​ bag?

Click here to see answer by josgarithmetic(39616) About Me 

Question 1056815: The owner of Nuts2U Snack Shack mixes cashews worth $6.00 a pound with peanuts worth $2.30 a pound to get a half-pound, mixed-nut bag worth $1.70.
How much of each kind of nut is included in the mixed bag?

Click here to see answer by josmiceli(19441) About Me 

Question 1056740: if ABCD is similar to EFGD then x=
                  \  A___________5___________B
                 /   /                       \
                /   /   Y                     \
               9  E/_______________F           \ 7.5
              /   /                \            \
             /   /                  \x           \
            /   /                    \            \ 
           \ D_/______________________\G___________\C

the 9 is on the outside of AED

Click here to see answer by Cromlix(4381) About Me 

Question 1057244: A consignment of fodder can last 1000 sheep for 20 days.if the sheep consume the fodder at the same rate, how many consignments of fodder are needed to last 550 sheep for 400 days?
Click here to see answer by ikleyn(52776) About Me 
Question 1057244: A consignment of fodder can last 1000 sheep for 20 days.if the sheep consume the fodder at the same rate, how many consignments of fodder are needed to last 550 sheep for 400 days?
Click here to see answer by MathTherapy(10551) About Me 

Question 1057243: 5 men are hired to complete a certain job. if an additional men is hired, the job can be completed 8 days earlier. given that the number of days required to complete the job is inversely proportion to the number of men hired, find the number of additional men who must be hired in order for the job to be completed 28 days earlier.
Click here to see answer by ikleyn(52776) About Me 

Question 1057518: Jeff bought a 15 foot piece of rope for a project. He cut two sections. ONe was 3.6 feet and the other was 2.8 feet in length. Write the amount remaining as a fraction in simplest form.
So what I did was subtract 3.8 and 2.8 from 15 and got 8.6
( 15-3.8-2.8=8.6) but I don't know how to turn it into a fraction?

Click here to see answer by josgarithmetic(39616) About Me 

Question 1057519: Sam made 10 out 16 foul shots at her basketball game. Express this rate as a decimal.
Do I just divide 10/16?

Click here to see answer by jim_thompson5910(35256) About Me 

Question 1057482: If y varies inversely as x, and y = 5 when x = 8, find y when x = 20
Click here to see answer by Cromlix(4381) About Me 

Question 1057483: Z varies jointly as x^2 and y, and z = 20 when x = 2 and y = 3. Find z if x = 4 and y = 7/10
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Question 1057481: On a map, Bangor is 3 inches from Presque Isle, when they are actually 159 miles apart. If Caribou to Portland is 299 miles, how many inches apart would they be on the map? (Round to the nearest hundredth of an inch)
Click here to see answer by Cromlix(4381) About Me 

Question 1057603: An assembly line worker at Rob’s Bicycle factory adds a seat to
a bicycle at a rate of 2 seats in 11 minutes. Write a proportion relating the
number of seats s to the number of minutes m. At this rate, how long will
it take to add 16 seats? 19 seats?

Click here to see answer by Boreal(15235) About Me 

Question 1057660: What does a equal a/9=-4
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Question 1057762: Using the following scales, find the dimensions in a blueprint of an 8 ft-by-12 ft room. 1 in:2 ft
Click here to see answer by solve_for_x(190) About Me 

Question 1057860: A city bus finishes it 96 mile route in the same the same amount of time that a rural bus finishes its 144 mile route. The city bus averages 18mph slower than the rural bus how long does it take each bust to finish its route
Click here to see answer by solve_for_x(190) About Me 

Question 1057965: Karim read the book in 3 days. During the first day he read 1/5 of the book. During the second day he read 5/8 of what had left. On the third day he read 1/3 of what left and last 16 pages. How many pages was in the book?
Click here to see answer by josmiceli(19441) About Me 

Question 1058133: A tablet of medication consists of two substances in the ratio of 8 to 5. If the tablet contains 130 milligrams of​ medication, how much of each substance is in the tablet?
Click here to see answer by addingup(3677) About Me 

Question 1058167: A bag contains 10 white golf balls and 6 striped golf balls. A golfer wants to add 112 golf balls to the bag. He wants the ratio of white to striped golf balls to remain the same. How many of each should he add?
Click here to see answer by Fombitz(32388) About Me 

Question 1059143: I'm trying to solve for x: 145/350 = x/12250
Click here to see answer by ikleyn(52776) About Me 

Question 1059181: Rizwan gave 2/5 of the fruit triffle to his friend and ate 1/5 of the remaining. a) how much of the fruit trifle was left over? b) what fraction of the remaining fruit trifle did he take himself?

Click here to see answer by jorel555(1290) About Me 

Question 1059256: The ratio of boys to girls in a class is 2 to 3. There are 25 student is the class. How many are boys. We know the answer is 10, but we need the proportion worked out. Thanks
Click here to see answer by Alan3354(69443) About Me 

Question 1059524: z varies directly as x^2 and inversely as y^2 . If z = 165 when x = 4 and y = 7 , find z if x = 9 and y = 6 . (Round off your answer to the nearest hundredth.)
Click here to see answer by Edwin McCravy(20054) About Me 

Question 1059522: z is jointly proportional to x^2 and y^2 . If z = 470 when x = 8 and y = 2 , find z when x = 7 and y = 3 . (Round off your answer to the nearest hundredth.)
Click here to see answer by solver91311(24713) About Me 

Question 1059786: the ratio of the number of turns in the secondary winding to the number of turns in the primary winding is 25. The secondary winding has 8500 turns. Find the number of turns in the primary.
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Question 1059819: (x−6/13):0.8=(5x+6):13
Click here to see answer by josgarithmetic(39616) About Me 

Question 1060146: A runner traveled 3 miles in the same time that a cyclist traveled 10 miles. The speed of the cyclist was 14 mph greater than that of the runner. What was the cyclists speed?
The answer is supposed to be 20. I have tried everything I can think of but keep coming up with decimals.

Click here to see answer by jim_thompson5910(35256) About Me 

Question 1060767: For 400 students in a dorm, the food lasts for 25 days. 100 more students moved into the dorm. For how many days will the food last?
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Question 1060998: If X11= 440, y1=220 and x2= 360 determain the value of y2?
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Question 1061257: If the ropes are pulled taunt, how many knots do you get?

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Question 1061538: n a fort 600 persons have food provision for 27 days and after 10 days 80 persons more joined them.find the number of days in joined them.find the number of days in which the same food provision will be sufficient
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Question 1061537: In a fort persons have food provision for 27 days and after 10 days 80 persons more joined them.find the number of days in joined them.find the number of days in which the same food provision will be sufficient
Click here to see answer by ikleyn(52776) About Me 

Question 1061587: the kinetic energy of a moving body is directly proportional to its mass and the square of its speed. If the mass of an object is halved, by what factor must its speed be increased to have the same kinetic energy as before?
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Question 1061550: A contractor engaged 30 persons to construct the road in 30 days but only one fourth of the work was completed after 10 days. How many more persons are required to complete the work in time?
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Question 1061881: 7x(x+1.8)=0 Solve
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Question 1062047: v 5
- = -
6 2

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Question 1062239: You have a painting that is 30 in. wide and 22.5 in. tall. You would like to reproduce it 
on a sheet of paper that measures 8 1/2 in. by 11 in., leaving at least a 1­in. margin on 
all four sides. a) What scale should you use if you keep the sheet of paper in the 
normal upright orientation? Assume that the reproduction will be as large as possible. 
b) What scale should you use if you turn the paper on its side?

Click here to see answer by Theo(13342) About Me 

Question 1062383: The ratio of two numbers is 4:5. After adding 20 to the smaller number and subtracting 20 from the greater number the ratio becomes 14:13. Find the numbers.

Click here to see answer by josgarithmetic(39616) About Me