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proszę o pomoc ;)1. oblicz wartosc liczby x= 5⅓ - ⅓ * 81½ + 3³ - 3⁻¹ - 3²2.Dwa są dwa przeciwległe wierzchołki kwadratu A=(1,-3), C=(-5,1). Oblicz obwód i pole tego kwadratu.
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pomocy potrzebuje na juz !1. średnia arytmetyczna liczb: -2, 2, 4, 6, 8, x wynosi5. oblicz x2. Rozwiąż układ równań (x-1)² - (y+2)² = (x-y)(x+y) 2x+y=03. średnia kuli ma długosc 12cm oblicz pole powierzchni i objetosc tej kuli
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Circle the correct answers: a, b, c or d as in the example 0.1 What are you ________ about? a) think b) thought c) thinking d) to think2 My friends ______ on the computer.a) often chat b) chat often c) are often chatting d) are chatting often3 At the moment we _____ our clothes.a) wash b) are wash c) washing d) are washing4 What’s that noise? _______ again?a) She is shouting b) She shouts c) Is she shouting d) Does she shout5 That’s right. I_____ with you.a) agree b) am agree c) am agreeing d) agreeing6 My brother is really _______. He can’t sit quietly for two minutes! a) modest b) lively c) arrogant d) generous7 I'm ______ a teacher when I finish my studies.a) being b)going to c) going to be d) be8 He's usually friendly but now he ______ to be alone. a) want b) wants c) is wasting d) does want9 I must go. I ____ Sara for lunch.a) meet b) meeting c) 'm meeting d) 'm meet10 we're going to cross America ___ foot.a) by b) to c) on d)at11 Yesterday I ___ really ill.a) feel b) fall c) fell d) felt12 I ___ about the problem for a long time but I didn't know what to do.a) think b) thank c) thought d) taught13 Why ____ me from the station last nighta) didn't you telephone b) you didn't telephone c) you don't telephone d) don't you telephone14 He ____ want to come with us yesterday.a) doesn't b)didn't c) don't d) not15 ____you the letter last week?a)does John give b) did John give c) John did give d) John gave16 Did you find ___ who took your coat?a) out b) up c) in d) about17 what ___when the accident happened ?a) he was doing b) was he doing c) he did d) did he18 I was walking along when I ___ a strange noise.a)hearb b) was hearing c) was heard d) heard
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