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Solve for x given that 1/2 log, 9 + log, (5x−4) = 7. The figure below represents part of a school badge. The badge has rotation symmetry of order 4 and 0. Complete the figure to show the badge.
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7 stepsHapa kuna hatua za kutatua maswali uliyotoa:
Part 1· 7 steps
Tatua kwa kutokana na .
Rahisisha neno la kwanza kwa kutumia sheria ya logariti .
Badilisha neno lililorahisishwa kwenye mlinganyo wa asili.
Tumia sheria ya logariti kuunganisha maneno ya logariti.
Badilisha mlinganyo wa logariti kuwa mlinganyo wa kielelezo.
Ikiwa , basi .
Kokotoa thamani ya .
Tatua mlinganyo wa mstari kwa .
Rahisisha sehemu.
Unaweza pia kuandika jibu kama nambari mchanganyiko.
Jibu la mwisho ni:
Part 2
Kamilisha umbo kuonyesha beji.
Umbo lina ulinganifu wa mzunguko wa mpangilio wa 4 kuhusu kituo O. Hii inamaanisha kuwa beji nzima itaonekana sawa baada ya kuzungushwa kwa , , na kuzunguka O. Sehemu uliyopewa ni moja ya sehemu nne zinazofanana zinazounda beji.
Ili kukamilisha umbo:
- Chora nakala tatu zaidi za pembetatu uliyopewa.
- Kila nakala inapaswa kupatikana kwa kuzungusha pembetatu ya asili kwa , , na mtawalia, kuzunguka kituo O.
- Pembetatu zote nne zitakutana kwenye kituo O. Kila pembetatu itakuwa na pande zenye urefu wa 3 cm na 4 cm zinazotoka O, na upande wa 2 cm unaounganisha ncha za pande hizo mbili.
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