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Tutors Answer Your Questions about Proportions (FREE)
Question 127061: The time T necessary to make an enlargement of a photo negative varies directly as the area A of the englargement. If 30 seconds are required to make a 3-by-5 englargement, find the time required for a 5-by-7 englargement
Click here to see answer by edjones(3298)   |
Question 129122: Melissa is making scale models of 2 buildings. The Empire State Building is 1250 feet tall. Melissa's model of the Em pire State Building is 2 meters tall. The seattle space Needle is 605 feet tall. If Melissa uses the same scale, which proportion can be used to find h the height in meters of her model of the Space Needle?
Click here to see answer by checkley71(8405)  |
Question 129873: Problem is from http://www.testprepreview.com/modules/algebra2.htm
If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working together to mix the 20 drinks?
Click here to see answer by edjones(3298) |
Question 130317: I can't seem to find the solution to this problem. I would appreciate some guidance. Thank you. A solution containing 30% insecticide is to be mixed with a solution containing 50% insecticide to make 200 L of a solution containing 42% insecticide. How much of the 50% insecticide solution should be used? liters
Click here to see answer by scott8148(3385)  |
Question 130961: The problem reads as follows:
Ideally, a school district would like the boy/girl ratio in each classroom to be essentially the same as the ratio of boys to girls in the whole class. Suppose an incoming fifth grade class is made up of 123 boys and 87 girls. Assuming there are 7 classrooms, how many boys and girls will ideally be in each room?
I am puzzled on how to complete this one, any help would be greatly appreciated.
Click here to see answer by stanbon(26297) |
Question 130538: I am totally having no luck with setting up and solving the following word problem, can somebody help, please?
1. An administrator of a web site is told that a new server can handle 11,000 "hits" per second. The web site is currently experiencing a peak demand of about 85,000 hits per second; but every month, the peak demand increases by 3500 hits per second. Use a proportion equation to determine how many new servers the administrator should buy to address expected traffic for the next 18 months.
Click here to see answer by stanbon(26297) |
Question 132378: This word problem is stumping me, can anybody help?
1. Some students planned for a get-together. The budget for the food was $500. Five of the students failed to come therefore the cost of the food for each member increased by $5. How may students attended the get together?
Click here to see answer by scott8148(3385) |
Question 133417: If the total number of x apples equals b cents, what is the general formula, in cents, for the cost of y apples? Can someone please explain how you arrive at the answer? I know it should be relatively easy but its not clicking in my mind, thank u very much!
Click here to see answer by solver91311(5072)  |
Question 133926: President Abraham Lincoln was 6 feet 4 inches tall. An artist wants to make a larger-than-life statue of Lincoln using a scale of 1 inch = 2 feet. How tall will the statue be?
a.12 feet 8 inches
b.25 feet 4 inches
c.76 feet
d.152 feet
it states that the right answer is d but i'm not sure how to set it up in a porportion to get that answer.
Click here to see answer by solver91311(5072) |
Question 134033: The Ancient Greeks thought that the most pleasing shape for a rectangle was one for which the ratio of the length to the width was 8 to 5, the golden ratio. If the length of a rectangle painting is 2 feet longer than its width, then for what dimensions would the length and width have the golden ratio?
Click here to see answer by checkley71(8405) |
Question 134827: Hey I'm Ashlyn. I left my book at school and i had two problems to do i was wondering if you could tell me. I am doing triangles. In the back of the glencoe Algebra 1 red book there are extra practice problems I needed to know what the problems were for 16 & 17 in lesson 11-7. If you coulde help it would be greatly appreciated thanks
Click here to see answer by Earlsdon(4900) |
Question 135261: USE A PROPORTION TO SOLVE THE PROBLEM ABOUT DIRECT VARIATION.
A person's hair length varies directly with the number of weeks it has been growing. If Fred shaved his head bald and his hair was 0.15 inches long after 5 weeks, how long would it be afteran additional 4 weeks? Round to the nearest hundredth of an inch.
Click here to see answer by stanbon(26297) |
Question 135253: USE A PROPORTION TO SOLVE THE PROBLEM ABOUT DIRECT VARIATION.
A shadow cast by an object on a sunny day varies directly as the height of the object. If a person 61 inches tall casts a shadow 57 inches long, how tall is a tree which casts a shadow 42 feet in length?
Click here to see answer by solver91311(5072) |
Question 135253: USE A PROPORTION TO SOLVE THE PROBLEM ABOUT DIRECT VARIATION.
A shadow cast by an object on a sunny day varies directly as the height of the object. If a person 61 inches tall casts a shadow 57 inches long, how tall is a tree which casts a shadow 42 feet in length?
Click here to see answer by vleith(1977) |
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