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Musa sold a bag at sh. 160,000 making a profit of sh. 20,000. Find his cost price.
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15 steps11. Musa sold a bag at sh. 160,000 making a profit of sh. 20,000. Find his cost price.
Musa aliuza begi kwa sh. 160,000 akapata faida ya sh. 20,000. Tafuta bei yake ya kununulia.
Tambua bei ya kuuza na faida.
Bei ya kuuza (Selling Price) = Sh. 160,000
Faida (Profit) = Sh. 20,000Tumia fomula ya bei ya kununulia.
Bei ya kununulia (Cost Price) = Bei ya kuuza - Faida
Bei ya kununulia ni .
12. Solve for p.
Tafuta thamani ya p.Tafuta namba ambayo ikizidishwa na 3, inatoa salio la 5 unapogawanya kwa 7.
Tunaweza kujaribu namba tofauti za kuanzia 0 hadi 6 (kwa sababu tunafanya kazi modulo 7).
- Ikiwa ,
- Ikiwa ,
- Ikiwa ,
- Ikiwa ,
- Ikiwa , (Hii ndiyo jibu sahihi)
Thibitisha jibu.
na salio la 5. Hivyo, .
Thamani ya ni .13. The probability of Sandra winning a computer game is 0.6. Find the probability of her losing the game.
Uwezekano wa Sandra kushinda mchezo wa kompyuta ni 0.6. Tafuta uwezekano wa yeye kupoteza mchezo.Tambua uwezekano wa kushinda.
Uwezekano wa kushinda () = 0.6
Tumia fomula ya uwezekano wa kupoteza.
Jumla ya uwezekano wote ni 1. Hivyo, uwezekano wa kupoteza () ni 1 minus uwezekano wa kushinda.
Uwezekano wa Sandra kupoteza mchezo ni .
14. Using a ruler, a pencil and a pair of compasses only, construct an angle of .
Kwa kutumia rula, penseli na bikari pekee, chora pembe ya .Chora mstari wa msingi.
Chora mstari ulionyooka AB.
Chora pembe ya .
Kutumia A kama kituo na radius yoyote, chora upinde unaokatiza AB kwenye C. Kutumia C kama kituo na radius ileile, chora upinde unaokatiza upinde wa kwanza kwenye D. Unganisha A na D. Pembe .
Chora pembe ya .
Kutumia D kama kituo na radius ileile, chora upinde unaokatiza upinde wa kwanza kwenye E. Kutumia D na E kama vituo, chora pinde mbili zinazokatizana kwenye F. Unganisha A na F. Pembe .
Gawanya pembe kati ya na .
Pembe kati ya mstari AD () na AF () ni . Gawanya pembe hii ya mara mbili. Kutumia D na G (mahali ambapo AF inakatiza upinde wa kwanza) kama vituo, chora pinde mbili zinazokatizana kwenye H.
Chora pembe ya .
Unganisha A na H. Mstari AH utaunda pembe ya na mstari AB.
Hivyo, .15. Solve for b:
Tafuta thamani ya b.Tumia sheria za vipeo.
Wakati wa kugawanya namba zenye 'base' sawa, tunatoa vipeo (exponents).
Andika 27 kama kielelezo cha 3.
Tunajua kuwa . Hivyo, .
Linganisha vipeo.
Kwa kuwa 'base' ni sawa, vipeo lazima viwe sawa.
Tafuta thamani ya .
Ongeza 3 pande zote mbili za mlinganyo.
Thamani ya ni .
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