tìm bán kính của đường tròn đi qua A (5;3) và các giao điểm của 2 đường tròn (c1) và (c2) có phương trình x^2+ y^2=1

Which system of linear inequalities is represented by the graph? + l tv x-3y > 6 and y > 2x o x + 3y > 6 and y o x-3y > 6 and y> 2x o x + 3y > 6 and y > 2x + 4 la +

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle