Cho đường tròn (O;R) và (O';R) (O khác O'). có bao nhiêu phép tịnh tiến biến (O;R) thành (O';R)

Leo is going to use a random number generator 4 0 0 400 times. each time he uses it, he will get a 1 , 2 , 3 , 4 , 1,2,3,4, or 5 5. what is the best prediction for the number of times that leo will get an odd number?

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?