If the standard deviation of 4, 7, x, 10 and 11 is √6, find the value of x and hence calculate the mean deviation.

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Write the equation of the circle centered at (10,-2) with radius 2