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is noelevans levans from AoPS?
help me on another one
\frac{c}{c-5}=\frac{4}{c-4}
FInd c.
Also, the LaTeX doesn't seem to work..
Find all real values of x that satisfy the equation (x^2-82)^2 = 324
a) Suppose we graph every point z in the complex plane such that |z| = 4. What shape results?
b) What is the graph of the equation |z-2i| = 3
a) Suppose we graph every point z in the complex plane such that |z| = 4. What shape results?
b) What is the graph of the equation |z-2i| = 3
Compute |5-12i|+|3-4i|.
How many pairs of integers (b,c) satisfy the equation
Express
in the form a +bi, where a and b are real numbers.I got -26, I don't remember how, but I used binomial theorem. It is wrong I believe
whenever i do binomial theorem, i keep getting the same thing, but its wrong
I dont know..
HELP!!!
Its okay, I got 21
What is the sum of the squares of the roots of
?A bag has marbles of 4 colors: red, white, blue, and green. Assume that if we take four marbles out at random (without replacement), each of the following is equally likely:
(1) one marble of each color is chosen,
(2) one white, one blue, and two reds are chosen,
(3) one blue and three reds are chosen,
(4) all four are red.
What is the smallest possible number of marbles in the bag?
Six points on a circle are given. Four of the chords joining pairs of the six points are selected at random. What is the probability that the four chords form a convex quadrilateral?
Exactly how many are there, I did 24, but it is wrong..
A number is called a perfect square if it is the square of an integer. How many pairs of perfect squares differ by 495? (Order does not matter. So, the pair "16 and 9" is the same as "9 and 16".)
ah, yes what you are getting is correct!
that isnt correct. any other solution?
My basketball team has eight games next month. We're pretty good; we have a 2/3 chance to win in each game. What is the probability we have a winning streak of at least four games at some point during the month?
In a heptagon, there are 3 right angles, what is the measure of the greatest possible integer angle in the remainder of the angles?
I have a bag with 5 pennies and 3 nickels. I draw coins out one at a time at random. What is the probability that I haven't removed all 3 nickels after 4 draws?
I tried 1/2 and 11/14. They are wrong
Thank you
That doesn't help, I knew that just that i keep losing count.