maTematika 7

4. rioni — 300 km; enguri — 300 km; cxeniswyali — 165 km; aragvi — 105 km; alazani — 240 km.6. 3x+4x+13x=4; 20x=4; x=0,2. nikeli — 0,6 kg; TuTia — 0,8 kg; spilenZi — 2,6 kg;7. 6 sm; 9 sm. 8. 40x=125 31x=96,875g.10. 7x=35, x=5. marTkuTxedis gverdebia: 20 sm; 15 sm.11. a) 80°; 100°; b) 45°; 135°.12. 30 sm sigrZis mqone AB monakveTze aRebulia C da D wertilebi ise, rom AC:CD:DB=1:7:2,ipoveT AC; CD da BD monakveTebis sigrZeebi 10x=30. AC=3sm CD=21 sm BD=6sm.13.metroTiavtobusiT=1metroTi mosiaruleebi — x; avtobusiT — 3x.3avtobusiTfexiT=2 3xe.i.5 fexiT=2 15fexiT x5 2x+3x+7,5x=23, saidanac x=2. fexiT — 15; metroTi — 2; avtobusiT — 6.18.40 + 50 + 60 + 50 + 60 + 406= 50.19. Tu amocana ar gvekiTxeba ramdeni procentiT Seicvala puris fasi, maSin undavupasuxoT gaiafda Tu gaZvirda. rasakvirvelia, gaiafda, radgan gaiafeba moxda ukvegaZvirebulis 10%–iT, romelic cxadia metia, vidre pirvandelis 10%. SegviZlia vnaxoT,ramdeni procentiT:10xxgaZvirebamde — x, gaZvirebis Semdeg — x+ =1111x ; gaiafebis Semdeg — -11x =99x100 1010 100 100; puris fasi 1%-iT ufro iafia.20. gaiafda 120 lariT, romelic 600 laris 20%-ia.reziume:11. ukuproporciuli sidideebimoswavlem unda SeZlos sidideebs Soris ukuproporciuli damokidebulebis danaxva.ukuproporciuli damokidebulebis SemTxvevaSi sesabamisi Tanafardobis Sedgenada ucnobi sididis povna. ricxvis dayofa mocemuli ricxvebis ukuproporciulsidideebad.amoxsnebi, miTiTebebi:5. a+b=120 da ba=8. es ricxvebia 64 da 56.767masc_cigni_VII_kl_cor.indd 67 03.07.2012 15:46:44