04/29/16

find the probability of guessing correctly at least 6 of the 10 answers on a true or false examination.
the correct answer is 193/512   please explain and show all working. thanks very much! 
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04/29/16

help with this math question
A series has sum Sn =n(2n-1) i) find, in terms of n, the nth term of the series. ii) Hence, show that the series is an AP   c. Find an expression for the sum to infinity of the Geometric... more
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04/28/16

exponential
2^x=16^x-1
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04/27/16

if a line passes through the points (-5,-4) and (3,-1), the equation of the line is y+4=3/8(x+__)???
Please help me!!!
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04/27/16

Find a polar equation of the conic in terms of r with its focus at the pole.
Find a polar equation of the conic in terms of r with its focus at the pole.   Conic: Parabola Vertex: (4,0)   r=?
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04/26/16

basic statistis
A total of 358 patients are tested for two diseases, Disease A and Disease B. Of these 358 patients, 42 have Disease A, 32 have Disease B, and 19 have both diseases. What is the χ2 statistic of... more
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04/26/16

a triangle with vertices J(2, 1), K(2, 6), and L(8, 3), and M is the midpoint of segment JK and N is the midpoint of segment KL comma what is the length of MN?
Given a triangle with vertices J(2, 1), K(2, 6), and L(8, 3), and M is the midpoint of segment JK and N is the midpoint of segment KL comma what is the length of MN?
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04/26/16

find the value of b given that the polynomial f(x)=x^3+bx^2-4x-5 when divided by x-3 and has a remainder of -8.
There is no additional details about my question as i dont know what to do and how to start
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04/26/16

for the polynomial equation: 9x^10+x^5-2x-17=0
I need help in finding what the number of complex solutions that satisfies the equation including multiplicity?   Number of solutions: n=____?   Thanks!
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04/25/16

Find an exponential function of the form f(x)=a^x which passes through the points (0,1) and (2,81).
A. 9x2 B. x9 C. 3x D. 9x E. None of the above
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04/25/16

Two tailed test
a researcher claims that the standard deviation of the number of deaths annually from tornados in the US is less than 35. If a random sample of 11 years had a standard deviation of 32, is the claim... more
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04/25/16

sin Pi/2 = cos______
The question is all I am given and I know it is unit of a circle
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04/25/16

What fuction rule is for
Domain: 1 2 3 4 5 6   Range:   3 2 1 0 -1 -2
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04/25/16

Find all solutions
2x^4+9x^3-16x-72=0
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04/25/16

Let R be the region in the plane bounded by the lines y = x^2, x = 0, and y = 4. Evaluate the double integral xe^(y^2) dA
for the limits of integration I got x^2 to 4 and 0 to 2.
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04/25/16

What is the degree measure of angle AOB?
In a circle with a radius of 5cm and is centered at point O, angle AOB intercepts arc AB. Arc AB has a length of 10cm. What is the degree measure of angle AOB? Round to the nearest hundredth
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04/24/16

Please solve sin^2x+cosx=2
Find all solutions between [0,2π).   Thank you  
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04/24/16

Solve 4tan^2x-1=tan^2x
Find all solutions between [0,2π), please.
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04/24/16

Quick Calculus Problem! Please Help!! Thank you!
Find the volume of the solid formed by revolving the region bounded by the graphs of y = x2, x = 3, and y = 4 about the y-axis.a.  (25π / 2)   b. (97π / 3)   c. (173π / 3)   d. None of these
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04/24/16

0 0 predict the number of times the spinner will land on blue in 100 spins
students spin a spinner 500 times the table shows the results of the experiment color Number of drawspurple 100white 200blue 150pink 50
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04/24/16

Solve the equation 4^(x/y+y/x)=32
This question did not mention the need of the answer. Can it be found in finding x and y.
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04/23/16

Need help with trigonometric question
I've been trying to do the following question and spent an hour on it, so far I have no luck doing it. (the 29 is in degrees) (Tan29 + TanX)/(1-Tan29TanX) = Tan2X   The question asks me to find... more
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04/23/16

STATISTICS 11
Construct a confidence interval for the population mean using a t-distribution:c = 95% m = 17.3 s = 4.1 n = 10
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04/23/16

integration
show that ∫dx/(2+3sinx) [upper limit pi/2, lower limit 0] = ∫dt/((t+ 3/2)2 - (√5/2)2) [ upper limit 1, lower limit 0]     I know that sin(x) = 2t/(t2+1), where t = tan(x/2) but i cannot get the... more
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04/23/16

Determine the rotation matrix that rotates 3-vectors through an angle of 300 in the plane x1 + x2 + x3 = 0.
The subject is ANALYTICAL GEOMETRY AND VECTOR ANALYSIS
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