Questions on Algebra: Proportions answered by real tutors!

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Question 56394This question is from textbook Algebra 1
: The actual distance between two towns is 28km. Suppose you measure the distance on your map and find that it is 3.5 cm. What is the scale of your map?This question is from textbook Algebra 1

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Question 56304This question is from textbook
: A city block 500 feet by 500 feet has a large building 300 feet by 400 feet in the NW corner. The rest of the block is an unobstructed paved lot. What's the shortest distance from the SW corner to the NE corner of the city block, going through the paved lot (to the nearest foot)?This question is from textbook

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Question 56305This question is from textbook
: A pilot, attempting to fly from Middletown to Westburg, a distance of 200 miles, notices after flying 180 miles that Westburg us still 35 miles away because the heading was off by a few degrees. How many degrees was the heading off the desired course (to one decimal place)?This question is from textbook

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Question 56937: 14 is 20% of what number?

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Question 55852: Is 14798678562 a perfect square? Is 15763530163289 a perfect square?

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Question 57603: 19 is 95 % of what number?
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Question 57603: 19 is 95 % of what number?
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Question 58804: A shopkeeper sold 100 fruits (3 types). Apple was sold for 10 cents each,Banana 1 Euro each and Orange sold for 3 Euro each. The total amount collected for the 100 fruits was 100 Euros. How many fruits of each type were sold? thanks
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Question 58839This question is from textbook discovering algebra. an investigative approach
: In a resort area during the summer months, only one out of eight people is a year-round resident. the otheres are there on vacation. if the year-round population of the area is 3000, how many people are there in the summer?


plz help me? with either this one or the other.
This question is from textbook discovering algebra. an investigative approach

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Question 58837This question is from textbook discovering algebra. an investigative approach
: Write a proportion for each problem, and solve for the unknown number.
A. Leaf-cutter ants live in central and south america weigh about 1.5grams. One ant can carrry a 4gram piece of leaf that is about the size of a dime. If a person could carry proportionally as much as the leaf-cutter ant, how much could a 55-kilogram algebra student carry?
B. The leaf cutter ant is about 1.27cm long and takes strides of 0.84cm. If a person could take proportionally equivalent strides, what size strides would a 1.65-m-tall algebra student take?
C. The 1.27-cm-long ants travel up to 0.4 km from home each day. If a person could travel a proportional distance, how far would a 1.65-m-tall person travel?
This question is from textbook discovering algebra. an investigative approach

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Question 58871: What is the base and height of a triangle if the area is 98 meters squared and the height is 3/4 of the base?
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Question 58870: A^2 = x ------ (1)
4A^2= x+147 ------ (2)
(2)-(1) implies 147=3A^2 implies A^2=49 implies A=7 i.e,length of the sides = 7 cms

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Question 58863This question is from textbook discovering algebra. an investigative approach
: jeremy has a job at the movie theater. his hourly wage is $7.38 suppose 15% of his income is with hield for taxes and social security.

A. what percent does jeremy get to keep?
This question is from textbook discovering algebra. an investigative approach

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Question 58982: When u have a problem like 7 is 175% of what number. How many places do you have to move the decimal to find the is or the of. I know when you find the percent you have to move the decimal to the right 2 times to add the decimal and the left to subtract the decimal but how many places do you have to move to find the is or of?
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Question 59278: namethree fraction whose decimal equivalent is 0.40.
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Question 59278: namethree fraction whose decimal equivalent is 0.40.
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Question 60645: A container is partially filled with 12 liters of whole milk containing 4% butterfat. How much 1% milk must be added to get a mixture that is 2% butterfat?




11. Simplify

2x-1/5 + x/6+ 8-3x/10

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Question 61598This question is from textbook
: 6. Use the fact that 1inch= 2.54 centimeters to answer each question.
A Don is 67 inches tall. How many centimeters tall is he?
B.Amira's pencil is 13.5 centimeters long. How many inchel long is it?
This question is from textbook

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Question 61619This question is from textbook
: 3. A team of biologists captured and tagged 85 deer in a forest. Two weeks later, the biologists captured a sample of 36 deer from the same forest and found that 4 of them were tagged. Use this information to estimate the number of deer in the forest. This question is from textbook

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Question 61624This question is from textbook
: 7. Use dimensional analysis to convert 60miles per hour to feet per second. Remember that there are 5280 feet in 1 mile.This question is from textbook

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Question 61633: -5/c=1/3
-6/13=8/(x+1)
(r+2)/7=5/7

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Question 62321This question is from textbook MATHEMATICS
: HELLO MY SON HAS A QUESTION ABOUT SOLVING THIS PROPORTION USING MENTAL MATH. 18 OVER 32=M OVER 36. HOW DO WE FIGURE THIS OUT AND CAN YOU TELL US HOW YOU CAME UP WITH THE ANSWER SO THAT WE ARE ABLE TO DO HIS OTHER PROPORTIONS?This question is from textbook MATHEMATICS

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Question 62326: I hope I'm in the right section. I have question about determining volume. Here it is:
What is the volume of a sphere with a 3-mile radius?
V = 4/3 x pi x r3
V = 4/3 x 3.14 x 3 (to the third power)
V = 4/3 x 9.42 (to the third power)
V = 12.56 mi (to the third power)

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Question 62349This question is from textbook
: how do you cross multiply when there is a variable in the equationThis question is from textbook

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Question 62329: Re: Width of a crater if cits circumference is 12.3 miles:
12.3 (C) = 3.14d
12.3 3.14d
---- = -----
3.14 3.14d
= 3.9 width

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Question 63615: graphing equations with two variables. y= -1/2x +3
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Question 64880: 18m/min=?cm/s
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Question 65099This question is from textbook algebra tools for a changing world
: i have no idea what im doing. its all so confusing. i need help.This question is from textbook algebra tools for a changing world

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Question 63164This question is from textbook
: THIS IS USING RATES...
Find a rate for each situation. then use the rate to answer the question.
A. kerstin drove 350 miles last week and used 12.5 gallons of gas. How many gallons of gas will he if he use drives 520 miles this week?
B. Angelo drove 225 miles last week and used 10.7 gallons of gas. how far can he drive this week using 9 gallons of gas?
This question is from textbook

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Question 65453: A van travels220 miles on 10 gallons of gas. how many gallons the van needs to travel 550 miles. I need help in writing and solving how.
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Question 65558: I have another word problem I understand but I don't understand....
The period of a simple pendulum is directly proportional to the square root of its length. If a pendulum has a length of 6 feet and a period of 2 seconds, to what length should it be shortened to achieve a period of 1 second?
I understand:
Pendulum directly proportional to square root of length
6 feet with a period of 2 seconds
I am trying to find the length to be shortened to make a period of 1 second.
I know I might be nuking this....

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Question 65558: I have another word problem I understand but I don't understand....
The period of a simple pendulum is directly proportional to the square root of its length. If a pendulum has a length of 6 feet and a period of 2 seconds, to what length should it be shortened to achieve a period of 1 second?
I understand:
Pendulum directly proportional to square root of length
6 feet with a period of 2 seconds
I am trying to find the length to be shortened to make a period of 1 second.
I know I might be nuking this....

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Question 25975: 4 pencils and 2 pens cost $1.08 6 pencils and 5 pens cost $2.22 find the cost of each pen and pencil


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Question 19935: a fly wheel has 72 teeth and a starter drivegear has 15 teeth. Find the ratio of fly wheel teeth to drive gear teeth.
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Question 65892: The distance required for a car to stop is directly proportiional to the square of its velocity. If a car can stop in 112.5 meters at 15 kilometers per hour, how many meters are needed to stop at 25 kilometers per hour?
Answer Choices:
A 250.75
B 298.00
C 312.50
D 337.50

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Question 65897: The distance required for a car to stop is directly proportional to the square of its velocity. If a car can stop in 112.5 meters at 15 kilometers per hour, how many meters are needed to stop at 25 kilometers per hour?
Answer Choices:
A) 250.75
B) 298.00
C) 312.50
D) 337.50

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Question 65897: The distance required for a car to stop is directly proportional to the square of its velocity. If a car can stop in 112.5 meters at 15 kilometers per hour, how many meters are needed to stop at 25 kilometers per hour?
Answer Choices:
A) 250.75
B) 298.00
C) 312.50
D) 337.50

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Question 66217: The scale of a map reads 1:250000. Find the distance, in km, between 2 towns which are 3.5cm apart on the map.
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Question 66255: Please help me find the measures of the sides of the triangle: The ratio of the measures of three sides of a triangle are 1/2:1/3:1/5, and its perimeter is 6.2 centimeters.
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Question 66255: Please help me find the measures of the sides of the triangle: The ratio of the measures of three sides of a triangle are 1/2:1/3:1/5, and its perimeter is 6.2 centimeters.
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Question 66253: Can you please help me with this proportion? The ratio of the measures of three angles of a triangle is 5:7:8. Find the measure of each angle of the triangle.
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Question 66261: If a:b=3:4 and a:(b+c)=2:5.find the value of a:c?
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Question 66251: Please help me solve this proportion: The ratio of the measures of three sides of a triangle is 9:8:7, and its perimeter is 144 units. Find the measure of each side of the triangle.
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Question 66251: Please help me solve this proportion: The ratio of the measures of three sides of a triangle is 9:8:7, and its perimeter is 144 units. Find the measure of each side of the triangle.
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Question 66383: plz help me with this plz? iv been up all night trying to figure it out. its 26cm/s=?m/min. plz help
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