Một hộp dựng 9 cái bánh ngọt và 6 cái bảnh mặn. Lấy ngẫu nhiên lần lượt không hoàn lại hai cãi bánh từ hộp đó. Tính xác suất để. a) Hai bánh được lấy ra đều là bình ngon. b) Binh được lấy lần thứ hai là bánh ngọt.

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

(23*2)-12=x     x=34

step-by-step explanation:

∈3,600

step-by-step explanation: