Có 5 cuốn sách khác nhau A, B,C, D,E đặt trên giá sách. rút lần lượt 3 (không hoàn lại) 3 cuốn a. không gian biến cố sơ cấp có mấy phần tử
b. số biến cố thuận lợi cho rút được cuốn sách A và biến cố không rút được cuốn sách A là bao nhiêu?

sgth thdhtxr ythdsx hfgh ysrth th srtrh

step-by-step explanation:

trshd h rdhsjsdrnytjdt jyjyukfddythj

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.

too hard the other guy did it

step-by-step explanation:

it is 10.6 according to my calculations