03/19/13
Scores for an entry exam to a university...?
Scores for an entry exam to a university are normally distributed with a mean of 75 and a standard deviation of 6.5:
a) If the top 5% are admitted with a full scholarship, what is the lowest score...
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03/18/13
Compute the work done?
Compute the work done by the force field F(x, y)=<2, x> where C is the portion of y=x^2 from (0, 0) to (1, 1).
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03/16/13
Solving radical equations.
√8x+1 = 5
√5x-4 = 6
√7x-3 -2 = 0 , the -2 is not under the radical sign
√5x^2 - 3x = 2x
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03/16/13
Graph y=2tan(3x-30)+2 in degrees
came across this problem and it is suppose to be graphed in degrees. I have only graphed in radians. How do I do it?
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03/16/13
Solve the system with the addition method:
Solve the system with the addition method:
(7 x -4 y, =, 5)
(21 x -12 y, =, 15)
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03/16/13
interval notation
Solve each inequality and give the solution in interval notation:
5-3 |2 x+8| lt -22
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03/14/13
how do you graph log base of 2(4-X)
I need help with graphing log base of 2 (4-X)
I get confused with the shifting
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03/13/13
Log3(27x)^2
xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
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03/13/13
How to mutiply (14x-28y)/[-7(x-2y)]
When i multiply, i get the answer wrong.
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03/12/13
The radiator in a car is filled with a solution
The radiator in a car is filled with a solution of 65% antifreeze and 35%t water. The manufacturer of the antifreeze suggests that for summer driving, optimal cooling of the engine is obtained...
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03/08/13
find the number of nickels
A collection of dimes, nickels and quarters amounts to $11.95. If there are 173 coins in all and there are twice as many dimes as there are quarters, find the number of nickels.
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03/08/13
how do you foil (2(1-sinx)(1+sinx))
how do you foil when theres a coefficient?
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03/07/13
Jim sold $7343.75worth of food. he sells hot dogs for $2.95 and steak for $9.95. if he sold a total of 985 items how many of each item did he sell?
write an equation
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03/07/13
bob has 60 coins consisting of quarters and dimes. the coins combined value is 9.45. how many quarters and how many dimes are there?
how owuld you graph this?
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03/07/13
What is the solution using the quadratic formula to solve x^2-3x+9/4=0
What's the answer
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03/06/13
4^2x+5 = 8^3x
solve for x and im completely lost as to what to do.
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03/05/13
whats the square root of 49x and x has a exponent of 6
its just dificult
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03/05/13
Physics Questions
A 0.14kg pinecone falls 16m to the ground, where it lands with a speed of 13m/s. With what speed would the pinecone have landed if there had been no air resistance?
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03/03/13
Factoring 56x squared + 95x +36
How do I factor this trinomial? Thank you!
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03/02/13
Solve (e^x + 49e^-x)/2 = 7
this is a fraction
(e^x + 49 e^-x) / 2 =7
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03/02/13
Find all the zeros using the Rational zero theorem
f(x) = 4x^4 + 21x^3 +33x^2 + 147x +35
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