Предмет: Математика, автор: msolyavolkova

Вороне где-то бог послал кусочек сыра, в нём содержалось 45 процентов жира. Белка же было 35. Хотелось Б массу сыра мы узнать, но только знаем с вами мы пока, что жира было в нём на 50г больше, чем белка.

Ответы

Автор ответа: sekretvaleri
0
45%-35%=10% или 50грамм
жир - 45%*50/10%=225грамм,
белок - 225-50=175грамм,
остальное - 20%*50/10%=100.
итого=500грамм
Похожие вопросы
Предмет: Химия, автор: liza222623
Предмет: Английский язык, автор: assassin2kom
Present Perfect.


Test 2.


Put the verbs into the correct column. Translate.


Take, swum, spoken, shake, took, taken, write, speak, swim, shook, wrote, spoke, shaken, written, swam.


Infinitive (V1)


V2


V3


translation



2. Put the verb have / has.


1. We _______ played the piano today


2. ________she helped her mum yet?


3. They _______ done tricks for a year.


4. Anna ______washed off graffiti from the walls.


5. ______Net swept the paths?


3. Put since / for


______I was 5, _______Saturday, ______6 months, ______they were 9, _____many years


4. Make up sentences.


1. Sam / since/ has/ tricks/ done/ he was 5/


_____________________________________________________________


2. Jane and Kate/ two years/have / ballet/ for /danced/


______________________________________________________________


3. How long/ has/ Tim/ swept/ the paths?


_____________________________________________________________


4. I/ have/ sewn/ toys/ for/ 3 days.


____________________________________________________________


5. We/ the violin/ played/ this month /have/


5. Match the sentences.


1) Jack can do tricks.


2) She is happy because her house is clean, too.


3) Mr. Elson is happy. There is a lot of food in the fridge.


4) Mrs. Welsh is happy. Her flowers are beautiful.


5) Mr. Davis is happy because the paths in the garden are clean.


6) The children in the hospital are happy. They have a lot of new toys.


a) Helen and Ann have sewn soft toys for them.


b) He has done tricks since he was 5.


c) The twins Jay and Jane have cleaned up the house.


d) Helen has watered the flowers.


e) Ron has done the shopping.


f) Alex has swept the paths.


1


2


3


4


5


6



6. Answer the questions.


1. Напиши формулу present perfect tense.


___________________________________________________________


2. Когда мы используем в речи present perfect tense?


______________________________________________________________________________________________________________________________________________________


3. Как мы образуем V3 у неправильных глаголов?


______________________________________________________________________________________________________________________________________________________


4. Когда употребляется вспомогательный глагол has?


________________________________________________________________________


даю 100 балов