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A parallelogram is determined by the vectors a = (2,5) and b = (3,2). Determined the angles between the diagonals of the parallelogram?

Let x be a binomial random variable with n=10 and p=0.2
In how many possible outcomes are there exactly 8 successes?

What is the period of #f(t) = 3(sin(tpi/4)4)#?

How do you factor #a^4+2a^2b^2+b^8#?

Question #771c5

How do you rationalize the denominator of #1/(sqrt(2)+sqrt(3)+sqrt(5))#?

Two opposite sides of a parallelogram have lengths of #8 #. If one corner of the parallelogram has an angle of #pi/8 # and the parallelogram's area is #12 #, how long are the other two sides?

I know that it will be of the form #2C(x)=C(x/2)#, but I am still stuck to write the transformed function. Can anybody help?

How do you write #(4sqrt(3)4i)^22# in the form of a+bi?

There are (n+1) white and (n+1) black balls each set numbered 1 to (n+1). The number of ways in which the balls can be arranged in a row so they the adjacent balls are of different colours is ?