10/16/16

Find the GCF of the numbers. 140,160 A. 1120. B.224. C.4. D.20
I don't know what a factor tree is. You don't have to use a factor tree since I don't know it. Please give an explanation!
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10/16/16

Geometric Series Word Problem
A large school board established a phone tree to contact all of its employees in case of emergencies or inclement weather. Each of the three superintendents calls three employees who each in turn... more
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10/16/16

Ratio and stratified sample
The ratio of children to adult visitors is 2:3. The ratio of adults to senior citizen visitors is 4:5. A stratified sample of 70 is to be taken from the visitors to the theatre. How many senior... more
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10/16/16

The fifth term of a geometric series is 405 and the sixth term is 1215. Find the sum of the first nine terms.
Don't know how to find the first term please explain. 
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10/16/16

Using binomial theorem for approximation
I have to approximate 0.99^9, using binomial theorem. I can't figure out how to get it to (1 + x)^9 form.
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10/16/16

doubt for word problem expert please understand my doubt
OF means MULTIPLY but in normal english of has the meaning 'belonging to'some of complex word problem i cant determine what is exact meaning of "of" show me the key points that should help me to... more
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10/15/16

a sportsman can run 240 feet down a sand dune in 15 seconds. he can run 260 feet up the sand dune in 65 seconds.
a sportsman can run 240 feet down a sand dune in 15 seconds. he can run 260 feet up the sand dune in 65 seconds. how fast can the sportsman run in the sand on level ground?
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10/15/16

In September Nashville had 38 violent shootings, compared to 26 during the same time period the year before. What is the percent expresses this increase?
In September Nashville had 38 violent shootings, compared to 26 during the same time period the year before. What is the percent expresses this increase? 
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10/15/16

Dealing with unknown constant within summation.
I want to be able to rearrange the equation so that the constant B is removed form the sine component of the following summation.   Example  (i=1 to n) Σ sin(Bxi)cos(BXi) = 0?   I have all the... more
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10/15/16

The sides of the regular hexagonal nut shown below are x = 17 millimeters long. Find the height h of the nut.
The sides of the regular hexagonal nut shown below are x = 17 millimeters long. Find the height h of the nut.    
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10/15/16

The height of a tree at time t is given by h(t) = 2t + 3, where h represents the height in inches and t represents the number of months. Identify the independen
I really need help answering this question
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10/15/16

Use the properties of exponents to simplify this expression: (p^12)^a
Use the properties of exponents to simplify this expression: (p^12)^a
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10/14/16

my full question is attached.
City workers are required to fence in a park tennis court, the city plans say the tennis court is 42 feet longer than it is wide, and has a perimeter of 228 feet. The fence comes in lengths of 30... more
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10/14/16

how many grams of the 50% copper alloy should be used to make 1000 grams of a metal alloy that is 45%
A metalalloy is 25% copper. Another metal alloy is 50% copper. How many grams of 50% copper alloy should be used to make 1000 grams of a metal alloy that is 45% copper. 
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10/14/16

a rectangle sandbox is surrounded on all sides
A rectangular sandbox is surrounded on all sides by a strip of grass that is 55 feet wide on all sides. The length of the sandbox is 44 feet more than the? width, and the total area for the sandbox... more
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10/14/16

Leon and Tyrone have 14 mice. Leon has 2 more mice than Tyrone. How many mice does each boy have?
3rd Grade Math question
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10/14/16

Finding Equations
This is a story problem and I can't seem to find the right equation to solve this.   How much of the aztec coffee, which sells for $6 per pound, and how much of the cinnamon coffee, which sells... more
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10/14/16

If you take 2000 steps to walk one mile , how many miles can you walk in one million steps?
Is the answer 500 miles? 
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10/14/16

help math essay
When working with quadratics, we often use the identity a^(2)-b^(2)=(a+b)(a-b) to factor quadratic expressions of such a form. Using what you’ve learned about rationalizing denominators and complex... more
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10/14/16

MATH HELP EQUATIONS
Identify the system of equations which has no solution. A. -x = 3y + 1     X= 3y - 1   B. x - 2y = -6   2x = 4y - 12   C. x = 2y - 1    2x = 4y   D. 5x + 2y = 4    2x - 2y = 10
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10/14/16

Equation for Alegbra 2
Jared is building a rectangular prism garden box and wants to use soil that he already has in his shed. He decides that he wants the length of the garden box to be 2 feet longer than the width and... more
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10/14/16

Equation for Alegbra 2
Use the correct properties and methods to simplify 2(k+4)(k-2)       Now let k=5 and evaluate the expression.
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10/14/16

telegraph poles are spaced 50 metres apart along a straight road. How long is the road if there is a pole at each end of the road and 20 poles altogether
This is for a 11-12 year old sheet and my answer was 950 metres but it is wrong help please
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10/14/16

I have a box that measures 12 by 8 by 4 square units. If each unit measures 3 inches, what is the volume of my box?
I have a box that measures 12 by 8 by 4 square units. If each unit measures 3 inches, what is the volume of my box?
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10/14/16

A 24 pack of water cost $4.99. How much would 1 bottle of water cost?
i need help badly plz halp!!  
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