10/02/14

Polynomial Question?
The graph of f(x) = ax^4+ bx^2 + cx -24 crosses the x-axis at 1,-2 and 3. Determine the equation of f(x).   How do I get an answer of f(x)=-4x^3 + 8x^2 + 20x - 24
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10/02/14

How much copper and how much 10% alloy were used to produce 36kg of the 25% alloy?
Pure copper was mixed with 10% copper alloy to produce 25% copper alloy. How much copper and how much 10% alloy were used to produce 36kg of the 25% alloy?
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10/01/14

Equilibrium quantity and equilibrium price
The demand equation for the Bohen Industries Jigrods is 3x+p-1500=0, where x is the quantity of items demanded per week, and p is the unit price in dollars. The supply equation is 2x-3p+1200=0,... more
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10/01/14

How many hours must he sleep before his blood alcohol limit drops to 0.04, or ½ the legal limit?
How many hours must he sleep before his blood alcohol limit drops to 0.04, or ½ the legal limit?
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10/01/14

Word problems
A pedestrian walked 6 miles in a certain interval of time. Had the time been 1/2 hour less, the rate would have been 2 miles per hour greater. How long did the pedestrian walk?
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10/01/14

Word problems
The corner of a square the length of whose side is 2 are cut off in such a regular octagon remains. What is the length of a side of this octagon?
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10/01/14

Wordproblems
Find a number of two digits from the following data: the product of the digits is 48, and if the digits be interchanged the number is diminished by 18
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10/01/14

enter a 3x3 skew symmetric matrix A
enter a 3 times 3 skew-symmetric matrix A that has entries a21=0, a13=1, a32=2.    
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09/30/14

help me!!!!
a farmer has 120 feet of fencing to make a new rectangular yard for his chickens. if he only needs to use fencing on 3 sides as his barn if the 4th side, find the maximum area he could make his yard.
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09/30/14

Several different bus routes stop at the Stag Trail Road Station….
Several different bus routes stop at the Stag Trail Road Station. One bus makes this stop every 36 minutes and another bus makes this stop every 60 minutes. If both buses arrive at the stop at 4:11... more
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09/30/14

At Springfield Senior High School, there are 1,050 students in the Junior Class and 750 students…
At Springfield Senior High School, there are 1,050 students in the Junior Class and 750 students in the Senior Class. To let the juniors work with more experienced students, the teachers want to... more
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09/29/14

if the equation below is to have 1 double real root, determine the value for m.
 if the equation below is to have 1 double real root, determine the value for m.   (m-2)x^2+mx+2=0
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09/29/14

if the equation below is to have 1 double real root, determine the value for m.1.) mx^2-6x+2=0
if the equation below is to have 1 double real root, determine the value for m.   1.) mx^2-6x+2=0
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09/29/14

Calculus 2 Question
Use partial fraction decomposition to solve the integral.   ∫(4x^2-57x+192)/(x^3-16x^2+64x)   For my answer, I got 3lnx+ln(x-8)+((x-8)^-1)+C   Can anyone see a mistake? It seemed like this... more
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09/27/14

6(4x + 5)squared - (4x + 5) - 35
6(4x + 5) squared - (4x + 5) - 35
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09/27/14

binomial theorem
the number of distinct terms in the expansion of (1+px)20 +(1-px)20 is...?
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09/27/14

binomial theorem
The cube root 217 is?   how to do it with binomial expansion?
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09/27/14

binomial theorem
Find the first negative term in the expansion of (1+x)27/5 where x is a positive number.
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09/27/14

express the time T that it takes to go from the island to town as a function of the distance x from P to where the person lands the boat
An island is 6 miles from the nearest point P on a straight shoreline. A town is 12 miles down the shore from P. If a person can row a boat at an average speed of 2 miles per hour and the same... more
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09/26/14

whats the standard form for 8x1plus 5x(1over 100)plus 9x(1 over 1000)
standard form for my question in the summary box
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09/26/14

complex number
IF 1,ω+ω²+.....+ωn-1 are the nth root of unity, then the value of (1/x-1)+(1/x-ω) +......+1/x-ωn-1 =________?  
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09/25/14

What is the plane's speed in still air?
7. A plane flies 600 miles with a tail wind in 2 hours. It takes the same plane 4 hours to fly the 600 miles when flying against the wind. What is the plane's speed in still air?   
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09/25/14

(2+i) is a root of x^4-5x^3+2x^2-9x+1 determine other root
how do you determine the other root?
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09/25/14

An auto race consists of 8 laps. A driver completes the first 3 laps at an average speed of 185 miles/hour and the remaining laps at an average speed of 200 mil
An auto race consists of 8 laps. A driver completes the first 3 laps at an average speed of 185 miles/hour and the remaining laps at an average speed of 200 miles/hour. If d represents the length... more
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09/25/14

Word Problems
An open rectangular box (no top) with volume 9 cubic meters has a square base. Express the surface area S of the box as a function of the length x of one of the sides.   s(x)=?
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