Find the constant term
Find the constant term in the expansion of
(-2x6+(5/x))21
03/18/14
prove that 3 is the only prime which can be written in the form n^2-1 for some integer n.
question 2: Try to find a positive integer n such that n^2-n+41 is not a prime.
03/16/14
8-bit representation question
Using 8-bit representation compute the following sumsa) 111 + 45b) 67 + 67
03/14/14
Express the following equation, using O ? or T notation
Express the following equation, using Ω Ο or Θ notation|3x^5 -4x^4 +3x^3 +2x^2 +5x +12| ≤ 12|x^5 |
02/25/14
How can I find the least-square regression line?
If I was given this data how can I find the least squares regression line:
x = 21
y= 78
sx = 1.5
sy= 0.8
r=0.81
02/25/14
mean score of 80 & standard deviation of 5
The scores on a math test were normally distributed with a mean sore of 80 and a standard deviation of 5.
What percent of the students scored less than 69?
02/24/14
Geometry help!
a spotlight is mounted on a wall 7.4 feet above the office building. It is used to light a door 9.3 feet from the wall. to the nearest degree, what is the angle of depression from the spotlight to...
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02/04/14
what compounds don't involve covalent bonds?
Which compound below does not involve covalent bonds?
(A) C2H6
(B) SF4
(C) O2
(D) Mg3N2
stuck on this question. Please help.
02/04/14
I have a question on my math quiz i had yesterday. I didn't know how to answer it. My teacher said to use 24 for how many hours he swam or something.
A swimmer broke a world record by crossing the Atlantic ocean on a raft. He traveled about 44 miles each day by swimming s hours and floating f hours. The rates for swimming are 3 mph. The rates...
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01/18/14
What can I file for?
I have been currently unemployed for the whole 2013 year, and tax season is coming up here soon and I was wondering what I could file for? During the year I purchased a 2013 TDI Jetta, can I get...
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01/15/14
if a ferris well take 45 seconds to make a complete rotation how many rotations will is complete in 3 hours
if a ferris well take 45 seconds to make a complete rotation how many rotations will is complete in 3 hours
01/15/14
What is the minterm notation for the following function? – f(a,b,c) = abc+a'bc+abc'+a'b'c
Design a controller of the parking meter. The controller has two inputs, C and B. C is a one-bit inputfrom the car detector. If there is a car in the parking spot, C = 1, otherwise C = 0. B is a...
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01/10/14
story problem
Mrs Bruce lacks 1 year from being 5 times as old as her son. Five years from now she will lack 1 from being 3 times as old as her son will be then. Find each of their ages. I know the first...
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01/05/14
Use the sum or difference formulas to determine: A. sin105 degrees and B. tan15 degrees
This is for my trig class, thanks for the help!
01/01/14
what force is required to accelerate a 115 kg linebacker at a rate of 3.5m/s2
what force is required to accelerate a 115kg linebacker at a rate of 3.5m/s2
01/01/14
How do I completely factor expressions
Please help since I am confused on how to do this.
How do I compete factor 144 - 9p^2 ?
Please show steps. Thanks!
01/01/14
can you help me with this question?
this is the math question that i was ask to solve but do not understand. you are interesting in purchasing a wide-screen television set at target. on this type of tv the ratio of screen width to...
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12/30/13
evaluate expression
please evaluate this expression, then put in scientic notation.
9.6 x 10^3
2.4 x 10^5
I have 4x10^-3 for the evaluation but don't know if it should be 4.0 x10^-4 since the exponent is a...
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12/30/13
the vertex of the parabola below is at the point (4, -1). Which could be this parabola's equation?
I don't understand the question. What would the equation be for this vertex of the parabola? I'm doing Conic sections, and I don't understand the question.
12/29/13
write a rule
how do I write a rule for:
x -1, 0, 1, 2
y 1, 3, 9, 27
I think it is x add 1, and y multiply by 3
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12/29/13
evaluate expression
how do I evaluate the expressions, then write the answer in scientific notation?
1. (4.2 x 10^2) (4.2 x 10^5)
2. (2.5 x 10 ^-2)^4
write this number only in scientific...
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12/28/13
word problem with system of inequalities
rick is buying souvenirs on vacation. he wants to spend $70 at most, buy only has 60 cubic inches of space availalbe in his luggage. if bracelets cost $7 and take up 3 in (3) of space and t-shirts...
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