Натуральные числа х и у меньше 2009. Известно, что х делится на 54, у делится на 31, х+у делится на 85. Докажите, что х-у делится на 23

электрический ток это направленное движение заряженных частиц донное утверждение является  

1 гипоезой

2 научной моделью

3теорестическим выводом

найдите наибольшее значение квадратного трёхчлена x в квадрате+6x-4

 Нужна помощь!

A

. Read this letter from a young girl to a magazine.

. Fill in the gaps with expressions from the box.
. Each expression can be used only once.

...................................................................................................
. so I guess although I know as a result then moreover at first in fact
: besides
...................................................................................................

(1) ... everybody has goals in life. My goal is to get noticed. I want to be a star! tt was not always this way though, All through elementary school I was a nobody. The other kids picked on (colloquial ApaaHIMlI1) me and (2) ... I became shy and always wanted to stay in the background of things. I never spoke to anyone I didn't know, never joined any activities and (3)... hardly ever went out anywhere.

(4)... when I was aboutfourteen I changed my image, (5)... it was liltlethings like a short skirt or a new lipstick but soon I changed my style to something I liked and was comfortable with, (6) ... I'd been on Quite a few dates before, this was when the guys really started to take notice.

(7) ... soon after that change of image I got more confident and started to join in extra classes. (8) ..' I joined a talent school and spent half my free time there, I discovered I was good at acting, singing, dancing and other stuff (9) ... I thought that's it ... I'll become a star!

I will work as hard as I can to make my dream come true; whether I become an actress, a dancer, a singer, a model or even a writer, (10) ... it won't be easy but I know I have to do it!

два груза массами m1=200г и m2=300г связаны нитью и лежат на гладкой горизонтальной плоскости. С каким ускорением будут двигаться грузы, если к первому из них приложить силу F=1,5Н, направленную горизонтально? Определить силу натяжения нити, связывающей грузы?