9 КЛАСС СДЕЛАТЬ СОЧ ПО ГЕОМЕТРИИ. Найдите скалярное произведение векторов а ⃗ и b ⃗ :

а ⃗=5р ⃗-4q ⃗;( b) ⃗=7р ⃗+q ⃗, где p ⃗ и q ⃗ – взаимно перпендикулярные единичные векторы.​

=some trees was planted by gardener last year

запишите адрес на конверте. куда: бергэлей-роуд, лондон, 17, линда сильвестер.не забудьте записать свой адрес.

перевод же нужен был? )

dear friend. thank you for your letter.i really miss you,too.i think it is a great idea to visit you in london. all of us hope to get   the invitation letter very soon.what can i tell you about my holidays? this summer i was in the country.i was very lucky.the weather was fine all thr tine.my friends and i spend a lot of time.this one is for you.i hope you   will. you see   that i am bigger than i was lest year.i know you have a sweet tooth friend so i asked my granny to make some cherry jam. with lots of love and best wishes from me and my friends.                      

                                                                                your   твое имя и фамилия. 

  надеюсь переведёшь сам заранее !  

i bought a  book about animals last week.

i made my friend in the street last week.

i read the interesting book last week.

i have wrote the letter to the friend last week.

i sang a cheerful song at a concert last week.