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Question 208192This question is from textbook A Problem Solving Approach to Mathematics for Elementary School Teachers
: A Boeing 747 jet is approximately 230 ft long and has a
wingspan of 195 ft. If a scale model of the plane is about
40 cm long, what is the model’s wingspan?
This question is from textbook A Problem Solving Approach to Mathematics for Elementary School Teachers

Click here to see answer by msteesie(1)

Question 235196: 8/15= x-5/6
Click here to see answer by rfer(2688)

Question 235600: please help me solve this word problem:
Maria can write a paper an average of 4 pages during a 90 min. class period. At this rate,how many hours will it take her to write 16 pages?
create the proportion then solve.
This is what I did: 4/90=16/x, then i multiplied them and then i divided the number I got to 4. I got:x=360. But my teacher got x=6... Please tell me how she got that.
thank you
Click here to see answer by rfer(2688)

Question 235551: I have a question about scale drawsing and models. I am in 8th grade math. I know 1 inch equals 3 feet. I am trying to find the scale of a drawing that is 28 feet wide. On the drawing the apartment is 7 inches wide. I want to know how to create an equation to figure this out and other problems like this. Thanks!
Click here to see answer by solver91311(5072)

Question 235818: The ratio of men to women at a certain company is 5 to 8 How many employees does the company have if there are 65 male employees?

Click here to see answer by checkley77(7072)

Question 236121: Hi im really stuck on this question:
m+10/6m=7/8 they are supposed to be fractions. Im really not sure how to do this. I would really appreciate your help
-Thanks Drea
Click here to see answer by stanbon(26291)

Question 236133: I really need help.
n+2/15=n-4/25 they are fractions
Thanks
-Drea
Click here to see answer by Alan3354(6092)

Question 236142: Lebron James plays for the Cleveland Cavaliers and shoots on average twenty one times per game. Out of those twenty one shots he makes nine on average. If Lebron took three hundred and fifty seven shots for the month of November how many shots did he miss? What percent of the total shots were misses? Makes?
Click here to see answer by Theo(675)

Question 236199: Solve the equation using the quadratic formula.
2x2 = -12x - 3

Click here to see answer by checkley77(7072)

Question 236386: 6/? =62/217
Click here to see answer by checkley77(7072)

Question 236384: 100/30 = 7????
Click here to see answer by Jeff Gordon(28)

Question 236383: 52/91 = 42???
Click here to see answer by Jeff Gordon(28)

Question 236382: 49/56 = 32?
Click here to see answer by Jeff Gordon(28)

Question 236381: 24/40 = 30??
Click here to see answer by Jeff Gordon(28)

Question 236640: Two numbers are such that their difference, their sum and their product are to be one another as 1:7:24. What is the product of the two numbers?
Click here to see answer by checkley77(7072)

Question 236708: What is 74% of 110 using the percent proportion.
Click here to see answer by stanbon(26291)

Question 236940: 5/X = X/20
Do I use the positive solution, the negative solution, or both?
Click here to see answer by checkley77(7072)

Question 236940: 5/X = X/20
Do I use the positive solution, the negative solution, or both?
Click here to see answer by solver91311(5072)

Question 236958: Solve the following motion problems. Set up an equation and solve.
A boy rode his bicycle into the country at the rate of 15 miles per hour and returned over the same route at 12 miles per hour. If he was bicycling for 4.5 hours, how far into the country did he ride?

Click here to see answer by checkley77(7072)

Question 236956: The length of the skid mark of an automobile sliding to a stop is directly proportional to the square of the velocity. It was found that a car traveling 60 miles per hour left a skid mark 172 feet in length when attempting to stop. Find the length of the skid marks of a car traveling 50 miles per hour.
Click here to see answer by RAY100(1637)

Question 237537: Dr. Wong can see 10 patients in 3 hours. At this rate, how long would it take her to see 30 patients?
Click here to see answer by edjones(3298)

Question 237855: What is the cost for 1 bun when 6 buns cost $0.85
Click here to see answer by rfer(2688)

Question 237859: the amount of gold is measured in karats(K), where 24K represents pure gold. the mark 14K on a chain indicates that the ratio between the mass of the gold in the chain and the mass of the chain is 14:24. If a gold ring is marked 18K and it weighs 0.04 oz, what is the value of the gold in the ring if pure gold is valued at $300 per oz?
Click here to see answer by stanbon(26291)

Question 237999: Bacteria grow by cell division. If each cell divides into 2 in every 2 minutes how many cells will exist after 32 minutes? Assume there was only one cell at the beginning
Click here to see answer by nerdybill(2446)

Question 238161: If there are 142 people and there are 42 more women than men how many women would there be
Click here to see answer by JimboP1977(76)

Question 238166: the length of a rectangular width is 10 ft less than the length and the perimeter of 44 ft what should be the length
Click here to see answer by checkley77(7072)

Question 238225: A rare disease that affects 2 out of every 1,000 trees has been discovered. What percent of trees are affected?
Click here to see answer by JimboP1977(76)

Question 238298: 15% of what number is 150?
Click here to see answer by solver91311(5072)

Question 238449: 2. If 5 ounces is equal to 140 grams, then 2 pounds of ground meat is equal
to how many grams?
Click here to see answer by Fombitz(2113)

Question 238383: The ratio of the areas of two squares is 3 : 4. What is the ratio of the
lengths of their corresponding diagonals?
Click here to see answer by Fombitz(2113)

Question 238611: A model is made of a car. The car is 9 feet long and the model is 6 inches long. What is the ratio of the length of the car to the length of the model?
A. 18:1
B. 1:18
C. 9:6
D. 6:9
Click here to see answer by user_dude2008(716)

Question 238447: Thirty men take 20 days to complete a job working 9 hours a day. How
many hours a day should 40 men work to complete the job?
Click here to see answer by ankor@dixie-net.com(6693)

Question 239712: What is 5 percent of 58?
Click here to see answer by edjones(3298)

Question 239889: how would you solve a cross multipliction for a proportion
here is the promble :
4 apples 12 apples
--------- = -----------
$1.60 X
Click here to see answer by solver91311(5072)

Question 240050:
Click here to see answer by louis1412(1)

Question 240048: X/9 = 20/9
Is this answer 20/1
Click here to see answer by checkley77(7072)

Question 240456: solve reduce any fractional answers if necessary
5:x=1:7
Click here to see answer by edjones(3298)

Question 240528: pao spent $140 of his paycheck and put the remaining $20 in his savings account. If the number of dollars he spends is proportional to the number he saves, how much of a $156-paycheck will he put into savings
Click here to see answer by rfer(2688)

Question 240517: What is 14.6=k over 2.5?
Click here to see answer by rfer(2688)

Question 241352: There are two "similar" figures here. They're not similar but go to this link and you would understand:
http://www.facebook.com/photo.php?pid=4136355&l=5296210f8d&id=747513746
Triangle ABC is similar to ADE, use proportions to solve for X.
Note: X is from B~D.
I don't know why but I keep getting 3.2 for X, is that correct?
The reason I'm not sure if thats correct is because the 3rd question involving this figure asks what's the area, and when I try to find the hypotenuse I get a number that looks like it probably wouldn't be the answer.
Thanks!
Click here to see answer by kensson(7)

Question 241358: x + 4 divided by 3= x divided by 5.Please help

Click here to see answer by Earlsdon(4900)

Question 241374: The speed of sound is 186,000 mi/sec Convert into inches per year. I'm asking because my calculator can't handle the big number. Thanks.
Click here to see answer by Alan3354(6092)

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