10/15/16

show that if P(x) = (x^4 + mx^2+nx + K^2)is divisible by (x^2 -1), then P(x)|(x^2 - k^2)
The question is From a book called Fabio.Its IB Board.MATHS HL- 3rd Edition.
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10/10/16

marble word problems...grrrr
need help on this one!....there's a jar of marbles, containing red, blue, yellow, black, and white marbles. How many marbles must you draw (without looking), from the jar to be sure of getting at... more
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10/06/16

physics projectiles question, please help :)
A cannon is fired towards the edge of a cliff. It is found that if the cannon is fired at exactly 38 degrees above horizontal then the cannonball will just barely touch the edge of the cliff, which... more
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09/28/16

In a time of t seconds, a particle moves a distance of...
In a time of t seconds, a particle moves a distance of s meters from its starting point, where s equals 6t squared plus 4.(a) Find the average velocity between t equals 1 and t equals 1 plus h... more
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09/27/16

I need help with this word problem please!
Nicole left the hospital and drove toward her cabin on the lake.  Ryan left one hour later driving 16 km/h faster in an effort to catch up to her. After four hours Ryan finally caught up. What was... more
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09/27/16

What am I doing wrong?( limits,infinity,without hopital)
limx-->positive infty sqrt(3x^5-2x)-sqrt(3x^5-7x)    I first rationalized the whole thing. After this , i divided the top and the bottom by x^5 but the answer I got is not the real answer.... more
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09/27/16

How do I do this limit?( without hopital)
limx-->positive infty sqrt(9x^3+x) -x^3/2)    The only one thats under the square root is 9x^3+x   I dont know how to solve is
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09/27/16

Is it possible for a matrix A to be equal to the negative of its own transpose?
Is it possible for a matrix A to be equal to the negative of its own transpose? That is, is it possible for ? If so, give an example of a nonzero 2x2 matrix A that satisfies this equation.
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09/26/16

Someone please verify my answer!! ( limits)
lim as x tends to positive infinity sqrt(3x^5-2x)-sqrt(3x^5-7x)    Answer I got : (5)/(2√3)
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09/26/16

Find the solution
The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 125 grams of a radioactive isotope, how much will be... more
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09/26/16

How to solve this limit (without hopital rule)
lim as x tends to positive infty (x+√x)/(x2+x+1) 
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09/26/16

A bean bag is launched vertically upwards at 29.4 m/s. How long does it take to reach the maximum height?
Physics question
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09/25/16

Car tire raduis of 14 in is rotating at 780 revs per min. Find speed of car to nearest mph
A car with a tire of radius 14 inches is rotating at 780 revolutions per minute. Find the speed of the automobile to the nearest mile per hour. 
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09/25/16

Limit at infinity with cot and tan
limx-->positive infinity tan ( x/x^2+1)    limx--> negative infinity cot ( pix/4x+1)    This is so confusing for me, i would lice a detailed step by step. 
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09/25/16

Suppose the line tangent to the graph of f at x=3 is y=6x+4, and suppose y = 4x-5 is the line tangent to the graph of g at x = 3.
Find the line tangent to the following curves at x = 3. y = f(x)g(x)
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09/24/16

Mariella is selling raffe tickets for a school fundraiser. Adult tickets cost $4 and student tickets cost $3
What equation do I use 
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09/24/16

john can dust 2/5 of is house in 45 minutes. what is his rate of dusting per hour?
this question is on my homework and i cant figure it out i need someone really really really really smart
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09/24/16

word problem
The Jurassic Zoo charges ?$13for each adult admission and ?$10for each child. The total bill for the 250people from a school trip was ?$2689. How many adults and how many children went to the? zoo?
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09/24/16

More sequences
To save money for holiday presents, a person deposits $15 in a savings account on January 1, and then deposits an additional $15 every week thereafter until Christmas.   A. Write a sequence for... more
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09/23/16

Relative velocity train problems
A train starting from rest from a platform passes a pole the front part of the train crosses the pole with a velocity u and the real part of the train cross the pole with a velocity v. What is the... more
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