Tutors Answer Your Questions about Proportions (FREE)
Question 1131725: Use a proportion to set up and solve the following problem. Round your answer to the nearest tenth if necessary.
A 15.6 ft tall adult giraffe standing next to
a statue casts a 62.4 ft shadow. If the
statue casts a shadow that is 43.2 ft long, then how tall is it?
Click here to see answer by Boreal(15235)   |
Question 1132188: Amina bibi has prepared masonry mixture with sand and cement in a ratio of measurement 7:1. But after the brick-work it is seen that 72 kg of mixture remains. She has added more cement with this mixture and the ratio of measurement of sand to cement becomes 6:1. Let’s work out the total quantity of cement she has mixed.
Click here to see answer by Theo(13342)  |
Question 1132188: Amina bibi has prepared masonry mixture with sand and cement in a ratio of measurement 7:1. But after the brick-work it is seen that 72 kg of mixture remains. She has added more cement with this mixture and the ratio of measurement of sand to cement becomes 6:1. Let’s work out the total quantity of cement she has mixed.
Click here to see answer by ikleyn(52781)  |
Question 1132244: a certain school had regulations about the amount of pocket money and the number of dresses the student were allowed to have. during an inspection of a dormitory which contained 16 students, it was found that 8 had too much pocket money and 10 too many dresses. (a) what was the maximum number of students breaking both rules (b) what was the minimum number of students breaking both rules. (c)what can you say about the number of students breaking neither rules
Click here to see answer by ikleyn(52781) |
Question 1132246: there are 1000 students in a college. there are also 1000 lockers which are all opened. all the 1000 students are required to perform the following exercise: the first student should go round to change the state of all the lockers ( that is if a locker is opened it should be closed, if a locker is closed, it should be opened. the second student should start with the second locker and change the state of all the lockers which are multiples of 2 ( that is 2,4,6 etc. up to the 1000th locker). the third student should start with third fourth locker changing the state of all lockers which are multiples of 3. that is all the lockers at 3,6,9,12.... positions till all the 1000 lockers are attended to. the forth student should start with the fourth locker changing the state of all lockers which are multiples of 4. that 4,8,12... till all the 1000 lockers are visited. the exercise should be done with all the students changing all the state of all lockers starting from their position and the multiples of lockers at their corresponding positions until the 1000th student change the state of the 1000th locker. at the end of the exercise, how many lockers remained closed? explain your strategy or strategies used to arrive at your solution
Click here to see answer by ikleyn(52781) |
Question 1132242: a curve is defined by y=(x-1)(ax2 + bx +c)where a,b and c are all constants. the curve touches the x-axis at the point where x=1 and the line y=3x + 6 at the point (-2,0) (a) find the values of a,b and c (b) sketch the curve and fined the area of the finite region bounded by the curve and the lines x=1 and x=4
Click here to see answer by greenestamps(13200)  |
Question 1133402: Need help with this problem, not sure how to set it up. You have been asked to build a scale model of your school out of toothpicks. Imagine your school is 30 feet tall. Your scale is 1 ft:1.26 cm. If a toothpick is 6.3 cm tall, how many toothpicks tall will your model be?
Click here to see answer by josmiceli(19441)  |
Question 1133422: The time is takes to build a skyscraper is proportional to its height and inversely proportional to the number of construction workers. If it takes 10 workers 2.5 years to build a 20 story building, how long will it take 40 workers to build a 60 story building?
Click here to see answer by josgarithmetic(39617) |
Question 1133422: The time is takes to build a skyscraper is proportional to its height and inversely proportional to the number of construction workers. If it takes 10 workers 2.5 years to build a 20 story building, how long will it take 40 workers to build a 60 story building?
Click here to see answer by greenestamps(13200) |
Question 1133439: Bob and Mary have different Maths classes. Bob said to mary, "I have more of my homework done than you. I did 18 out of 36 problems so far." Mary disagreed saying, "I already did ____ out of 48 so far." What was the least number of problems that Mary must have done to have completed a greater percentage of his assigned homework than Bob?
Click here to see answer by josmiceli(19441) |
Question 1133626: A town map has a scale of 1:45,000.
a). A street in this town is 850 m long. How long is that street on this map? Round to the nearest tenth.
b). How long, in reality, is a road that measures 5.4 cm on the map?
Thank you!
Click here to see answer by MathLover1(20849)  |
Question 1134110: There will be 7 teams playing in the Maple Island Little League tournament. Each team is scheduled to play every other team once. How many games are scheduled for the tournament? Not sure how to work this problem. Can you help me?
Click here to see answer by greenestamps(13200) |
Question 1134555: the electrical resistance R of a wire varies directly as the length L and inversely as the square of the diameter d obtain an equation. connecting R, L and d if R =27 when 1=3 and d =2, calculate the (a)value of R. when L=8 and d=3(b) values of d when .R=16 and L=18
Click here to see answer by Alan3354(69443)  |
Question 1134556: the electrical resistance R of a wire varies directly as the length L and inversely as the square of the diameter d obtain an equation. connecting R, L and d if R =27 when 1=3 and d =2, calculate the
(a)value of R. when L=8 and d=3
(b) values of d when .R=16 and L=18
Click here to see answer by Alan3354(69443) |
Question 1134560: the number of students in a lecture room is inversely proportional to the square root of the number of lectures in a class of 30 students
there were 25 lectures. what is the evaluation connecting the students and the lectures. find the number of lectures that will be involved when there were 50students
Click here to see answer by josmiceli(19441) |
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