В первом ящике было в 4 раза больше яблок, чем во втором ящике. В двух ящиках вместе - 100 кг яблок. Сколько кг яблок в первом ящике ?

Упростить(Формулы тригонометрических функций двойного и половинного углов) 1.cos2al'fa/cosal'fa-sinal'fa

           2. cosal'fa/cosal'fa/2-sinal'fa/2

heeeeeelp please~!

Write the sentences using the verbs in brackets in Past Simple or Past Perfect

1) my granny...that she ...never... to London before (to say,to be)

2) He ...that he...his hat at the theatre( to remember ,to leave)

3) She...that she ...a good sighteeing tour around London (to write,to have)

4)The travellers ...to the hotel..their bags there and..for a walk in the town (to come,to leave,to go)

5)Yesterday i..a letter from my friend,from whom i..not..for a long time (to receive,to hear)

6) We...in yesterday's newspaper that a group of doctors from Ukraine...to London to take part in a conference (to read,to go)