Questions on Algebra: Proportions answered by real tutors!

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Algebra: Proportions

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Question 156410: how could you solve this question:
a rock climber burns 60 calories for every 5 minutes of rock climbing.
write a proportion on the lines below to determine how many calories a rock climber would burn in 7 minutes.

thanks if you answer this but can you try to get it answered by the morning of september 12,2008 thanks
Click here to see answer by ankor@dixie-net.com(6693)

Question 156432: heidi bought a minibright headlamp. her headlamp requires 3 batteries for every 6 hours of use.she is packing 12 batteries for her trip to marengo cave.

one the line below, write a proportion that can be used to find the number of hours (h) heidi can spend exploring the cave.

proportion_____________________

now use your proportion to find the number of hours heidi can spend in the cave.write your answer on the line below.
SHOW ALL WORK

answer___________________hours
Click here to see answer by checkley77(7035)

Question 156431: a rock climber burns 60 calories for every 5 minutes of rock climbing.
write a proportion on the line below to determine how many calories a rock climber would burn in 7 minutes.

proportion________________

now use the proportion you wrote to determine how many calories the rock climber would burn in 7 minutes. write your answer on the line below.
SHOW ALL WORK

answer________________calories
Click here to see answer by checkley77(7035)

Question 156420: if u need the other question that helped u get the proportion here it is
a rock climber burns 60 calories for every 5 minutes of rock climbing

now use the proportion 60 calories over 5 minutes to solve this

now use that proportion i just wrote to determine how many calories yhe rock climber would burn in 7 minutes
Click here to see answer by nerdybill(2446)

Question 156430: Corey is walking in a 3-mile walkathon on Saturday.In his last walkathon he walked 5 miles in 1.5 hours.
based on this rate,how much time will it take corey to walk 3 miles?you must use a proportion and your answer on the lines below.
SHOW ALL WORK

proportion_________________
answer_____________ hour(s)
Click here to see answer by kdr(11)

Question 157014: if a:b=1:3 and b:c=3:4 find a:c?
Click here to see answer by gonzo(654)

Question 157872This question is from textbook
: A fisherman on the river rows 9 miles downstream in the same amount of time he rows 3 miles upstream. if the current is 6 miles per hour. find how lonbg it takes him to cover the 12 miles.This question is from textbook

Click here to see answer by nerdybill(2446)

Question 158105: what is x if x-6/5=7/12
Click here to see answer by joey_quizan(15)

Question 158417: what is the answer for x/5=10/13

Click here to see answer by helper445(2)

Question 158417: what is the answer for x/5=10/13

Click here to see answer by Electrified_Levi(103)

Question 158421: what is the answer for x/5=10/13

Click here to see answer by orca(409)

Question 158426: Felix drove 800 miles in x hours on
Monday.
a) Write a rational expression for his average speed.
b) On Tuesday he drove for 6 hours at the same average speed. Write a rational expression for his distance on
Tuesday.

Click here to see answer by midwood_trail(310)

Question 158818: want to check my answer on....
3t 1
__ = __
10 2
I said it was t = 0.6
Click here to see answer by checkley77(7035)

Question 158820: A giraffe can run 32 miles per hour. What is this speed in feet per second? Round to the neareast 10th. I said it was 1020 feet per second. Am I right?
Click here to see answer by checkley77(7035)

Question 158879This question is from textbook
: Express each ratio as a fraction in simpliest form.
6. 10 inches to 3 feet
7. 5 feet to 5 yardsThis question is from textbook

Click here to see answer by jojo14344(1483)

Question 158878This question is from textbook
: Express each ratio as a fraction in simpliest form.
6. 10 inches to 3 feet
7. 5 feet to 5 yardsThis question is from textbook

Click here to see answer by checkley77(7035)

Question 158943: m: 6= 10 : 15 missing number in the proportion
Click here to see answer by checkley77(7035)

Question 159190: How would you divide $10,000 if the 1st person gets twice as much as the 2nd person and the 2nd person gets 3 timese as much as the third person?
How much does the 1st person get?
How much does the 2nd person get?
How much does the 3rd person get?
Thank You! :)
Click here to see answer by gonzo(654)

Question 159189: In a dog show there are 3 times as many collies as boxers. There are also 3 poodles for every 5 collies. What is the smallest possible number of dogs that could be in the dog show?
Thank You!
Click here to see answer by stanbon(26259)

Question 159188: If 15 x's = 20 y's and 16 y's = 10 z's, then 6 x's is how many z's?
Click here to see answer by stanbon(26259)

Question 159209: i am making a green potion mixture from two solutions, one containing 24% green color, the other 17% green. I need 5 liters of a solution with 18.5% green color. How much 24% and 17% should i mix?
Click here to see answer by josmiceli(3003)

Question 159250: If 7 x's = 2 y's and 3 y's =5 z's then 21 x's = ___z's
Click here to see answer by t_as87(5)

Question 159283: Change 40mph to ____ft/sec.
Click here to see answer by nerdybill(2446)

Question 159677: If 150 plates cost $3.29, how many plates would u get for $4.72
Click here to see answer by checkley77(7035)

Question 159669This question is from textbook
: Bronze- A pound of tin is worth $1 more than a pound of copper. Four pounds of tin are mixed with six pounds to make bronze that sells for $3.65 per pound. How much is a pound of tin worth?This question is from textbook

Click here to see answer by jojo14344(1483)

Question 159788: The fuel for a two-cycle motorboat engine is a mixture of gasoline and oil in the ratio of15 to 1. How many liters of each are in 6.6 L mixture ?
Click here to see answer by ptaylor(1578)

Question 159922: 8% of 40% of what number is 6% of 90?
Thanks! :)
Click here to see answer by Fombitz(2113)

Question 159997: A merchant has coffee worth $40 a pound that she wishes to mix with 20 pounds of coffee worth $80 a pound to get a mixture that can be sold for $50 a pound. How many pounds of the $40 coffee should be used?
Click here to see answer by Fombitz(2113)

Question 160000: a cashier has a total of 125 bills made up of fives and tens. The total value of the money is $815. How many ten-dollar bills does the cashier have?
Click here to see answer by nerdybill(2446)

Question 159999: From a point on a straight road, two cars are driven in opposite directions, one at 58 miles per hour and the other at 62 miles per hour. In how many hours will they be 480 miles apart?
Click here to see answer by nerdybill(2446)

Question 160041: The volume of a certain pipe varies directly with its length. The table below shows the volume of the pipe at two lengths. Find the volume of the pipe at the third length in the table.
Volume 30 gallons 45 gallons ?
Length 20 feet 30 feet 40 feet
Click here to see answer by edjones(3292)

Question 161290: 14>7y-21
Click here to see answer by MissHeidiRN(6)

Question 162043: maria wax her car in 2 hours when she works with susan they can wax the car in 45 mins. how long will it take susan working by herself to wax the car?
Click here to see answer by ankor@dixie-net.com(6693)

Question 162349This question is from textbook mc dougal littel middle school math
: 7.what number is 65% of 320?
9.what number is 120% of 55?
11.115 is 46% of what number?
13.62.4 is 80% of what number?
15.3 is what percent of 600?
19.112 is what percent of 0.01?
21.60% of 75 _ 75% of 60This question is from textbook mc dougal littel middle school math

Click here to see answer by elima(1433)

Question 162461: x/8=x-5/6
Click here to see answer by Earlsdon(4898)

Question 162463: x/8=x-5/6
I assume your problem is x/8=(x-5)/6; where (x-5) should all be above the 6, in this case by cross multiplying we obtain
6x=8(x-5)
6x=8x-40
6x-8x=8x-8x-40
-2x=0-40
-2x/-2=-40/-2
x=20
Lets check:
x/8 = (x-5)/6 ?
20/8 ? (20-5)/6
5/2 ? 15/6
5/2 = 5/2 answer is correct!

Click here to see answer by eperette(173)

Question 162718: Is this right? 5 is to 12 as x is to 48. I got x=20
Click here to see answer by checkley77(7035)

Question 162855This question is from textbook beginning and intermidiate algebra
: Determine wether the line PQ is parallel or perpendicular or neither to a line with a slope of -2. P(-2,1) Q(6,5)
I did the following:y-1=-2(x--2)
y-1=-2x-4
y=-2x-3 i got this for p
for Q
y-5=-2(x-6)
y-5=-2x+12
y=-2x+17 so i thought they were parallel; but they are perpendicular i got this one wrong on my test but i do not know what i did wrong please helpThis question is from textbook beginning and intermidiate algebra

Click here to see answer by jim_thompson5910(13787)

Question 162897: The interests earned on an investment varies directly with interest rate. If a 10% rate gives 200$, the interest rate that gives 300$ is..
Click here to see answer by checkley77(7035)

Question 162895: If y= Kx and y=7 when x=3, then K=
y=Kx
7=K(3)
7/3 = K(3)/3
7/3= K
Click here to see answer by eperette(173)

Question 162891: If y varies directly with x and y = 6 when x = 42 , find y when x =3
If y varies directly with x then y=Kx
(6)=K(42)
6/42= K(42)/42
1/7= K
REUSE FORMULA
y=Kx
y=(1/7)(3)
y=3/7

Click here to see answer by eperette(173)

Question 162901: The distance traveled by a car with constant speed is directly proportional to the length of time traveled. If the car travels 150km in 2 hr, then how far will it travel in 7 hrs?

Click here to see answer by Anthea Lawn(14)

Question 162894: If y varies directly as 2x to the power of 3 and y=54 when x =2 . find k
Click here to see answer by ankor@dixie-net.com(6693)

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