October 2018 1 10 Report

Zad. 1.

Udowodnij, że liczba a=(√3 - 5)(2√3 + 1)+ 9√3 jest liczbą naturalną.

Zad. 2.

Bok kwadratu ma długość 10 cm. Wyznacz stosunek długości promienia okręgu wpisanego w ten kwadrat do długości promienia okręgu opisanego na tym kwadracie.

Zad. 3.

Woda morska zawiera 5% soli. Ile kilogramów wody słodkiej należy dodać do 40 kg wody morskiej, aby zawartość soli wynosiła 2% ?

Zad. 4.

Dla jakich wartości a rozwiązaniem nierówności (ax-1)2 >(ax+2)2

jest zbió liczb większych od 1 ?


Zad. 5.

Najmniejsza myszka polna jest o 0.9 g lźejsza od piłeczki pingpongowej. Dwie takie myszki są cięższe tylko o 0,75 g od piłeczki. Ile waży najmniejsza myszka polna ?


Bardzo proszę o szybką pomoc : )


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Uzupełnij w odpowiedniej formie, wybierając Past Simple lub Past Perfect. When I (go) _______________ to Paris last spring for a job interview, I (not be) _______________ there for five years. I (3arrive) _______________ the evening before the interview, and (spend) _______________ a happy hour walking round thinking about the good times I (have) _______________ there as a student. As I was strolling by the Seine, I suddenly (see) _______________ a familiar face - it was Nedjma, the woman I (share) _______________ a flat with when I was a student, and whose address I (lose) __________________ after leaving Paris. I could tell she (not see) _______________ me, so I (call) _______________ her name and she (look) _______________ up. As she (turn) _______________ towards me, I (realize) _______________ that she (have) _______________ an ugly scar on the side of her face. She (see) _______________ the shock in my eyes, and her hand (go) _______________ up to touch the scar; she (explain) _______________ that she (get) ______________________ it when she was a journalist reporting on a war in Africa. She (not be) ___________________ uncomfortable telling me this; we (feel) _______________ as if the years (not pass) _______________, as if we (say) _______________ goodbye the week before. She (arrive) _______________ in Paris that morning, and she (have) _______________ a hospital appointment the next day. The doctors (think) _______________ that they could remove the scar, but she would have to stay in Paris for several months. Both of us (have) _______________ the idea at the same time: if I (get) ____________________ the job, we could share a flat again. And we could start by having a coffee while we (begin) _______________ to tell one another everything that (happen) ___________________ to us in the past five years.
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