11/06/14

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The speed of a river current is 3 mph. If a boat travels 20 miles downstream in the same time that it takes to travel 10 miles upstream, find the speed of the boat in still water.
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11/06/14

Train Rate
Two trains leave the station at the same time, one heading west and the other east. The westbound train travels 10 miles per hour faster than the eastbound train. If the two trains are 720 miles... more
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11/06/14

One number is 10 greater than another. If the lesser number is subtracted from three times the greater number, the difference is 42. Find the numbers.
Its asking for two numbers and it gives small hints I'm not sure what to do with this question
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11/06/14

If 600 mL of a juice drink is 15% apple juice, how much 100% apple juice should be added to make a drink that is 20% apple juice?
If 600 mL of a juice drink is 15% apple juice, how much 100% apple juice should be added to make a drink that is 20% apple juice?
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11/06/14

each edge of the cube is 6 cm. find the distance from the midpoint of one of the face diagonals to the furthest vertex of the cube.
i just need help with this problem. there is a cube provided but i dont think it is needed
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11/06/14

frank typed 140 words in four minutes in class. Rose typed 4/5 as many words as frank, and veronica typed 1.6 times the number of words frank typed.
trying to figure this question out for the past 20 min and cant figure out how my childs teacher came up with the answer.
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11/06/14

Students start a business. 1st student builds computer in 18h. Both take 7.2h.How long would it take the second student, working alone, to build the computer?
Two college students have started their own business building computers from kits. Working alone, one student can build a computer in 18 h. When the second student helps, they can build a computer... more
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11/06/14

Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -5x2 + 4x + 7.
 A. {-0.71,0.57} B.{-5,4} C. {-0.80,-1.40} D.{-0.85,1.65}
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11/06/14

Last year the 6th grade had 350 students. This year the number of students decreased by 36%. How would you set up this proportion?
I have to set up a proportion similar to percent of chane which is the difference of two given numbers over the original number, cross multiplied with "x" over 100. For example. 56-31 equals 25. So... more
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11/06/14

If he drove for 11 hours find the car's speed for each part of the trip.
Greg drove at a constant speed in a rainstorm for 266 miles. He then drove 184 miles at a speed that was 8 miles per hour faster than his previous speed. If he drove for 11 hours find the car's... more
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11/05/14

find the GCF (210,360) using the prime factorization method
 Find the GCF (210,360) using the prime factorization method
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11/05/14

determine whether 117 is prime or composite by using the square root theorem
hint- begin by taking its square root
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11/05/14

The area of a table top is 68 square feet, and twice the length is 7 feet shorter than 3 times the width. Find the perimeter of the table top.
The area of a table top is 68 square feet, and twice the length is 7 feet shorter than 3 times the width. Find the perimeter of the table top.
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11/05/14

A student made an error while trying to simplify the following rational expression, as shown below
30x²+5x/15x²     30x²+5x/15x², x≠0  cross off 30x² and 15x²   2+5x. x≠0   Identify and explain the error   and correctly complete the simplicification
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11/05/14

Probability question dealing with an or statement.
A bag contains 9 Buttercups & 3 Kisses. A box contains 4 Jolly Ranchers, 6 Life Savers, and 10 Werthers. If we randomly select 1 item out of the bag & 1 item from the box what is the... more
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11/04/14

Write an expression for 4th angle
The sum of the four angle measures of any convex quadrilateral is 360 degrees. Suppose that a convex quadrilateral has angle measures of 90 , 6y+3 , and 8y-5 degrees. Write an expression for the... more
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11/04/14

solve y=x^2+7x+100 using substitution
Solve y=x^2+7x+100 using substitution
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11/04/14

The ratio of those included to those excluded is 4 to 7. If 5x the # of excluded is 62 greater than the # included, how many were included/excluded?
Need by morning of 11/5 please
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11/04/14

It is possible to use a Venn diagram to help find the GCF and LCM of two numbers?
For example, to find the GCF and LCM of the numbers 48 and 66, you would find the prime factorization of each and organize the factors in such a way that the common factors went into the overlap of... more
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11/04/14

It is true that if 2 | 36 and 9 | 36, then 18 | 36, since 18 = 2 x 9.
So wouldn’t it also be true that since 4 | 36 and 6 | 36, then 24 | 36 since 24 = 4 x 6? Why or why not?
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11/03/14

Find the lengths of the fencing on this word problem
A man is building a rectangular garden along one side of his house with a picket fence on the other three sides of the garden. Find the dimensions of the largest garden that can be enclosed using... more
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11/03/14

The set of whole numbers between 5 and 9 inclusive is {______}.
The set of whole numbers between 5 and 9 inclusive is {______}.
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11/03/14

How many juniors are on the team? How many seniors?
There are 60 players on a football team. The ratio of juniors and seniors to freshmen and sophomores ontogeny team is 2:3. The ratio of juniors to seniors on the team is 1:2. How many juniors are... more
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11/03/14

determine the value of x.
Using a diagram with 2 parallel lines (7x-14)(degree sign) (5x+20)(degree sign)
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11/03/14

Figuring out the mean, median, mode and midrange
Listed below are the playing times (in seconds) of songs that were popular at the time of this writing. Find the (a) mean, (b)median, (c) mode, and (d) midrange for the given sample data. Is there... more
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