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calabrial51
@calabrial51
June 2021
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The three angles of a triangle are a°(a+20)and(a+40)°
Find the value of a
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caylus
Verified answer
Hello,
a+(a+20)+(a+40)=180
=> 3a+60=180
=>3a=180-60
=>3a=120
=>a=120/3
=>a=40(°)
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calabrial51
June 2021 | 0 Respostas
Les nombres 1 ; 7 ; 11 ; 19 ; 30 et un nombre inconnu ont pour moyenne le triple de ce nombre. Quel est ce nombre Pouvez vous me faire la vérification sachant que le résultat est 5
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calabrial51
June 2021 | 0 Respostas
Les trois angles d un triangle sont a (a+20°)et(a+40° Trouvez la valeur de a
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calabrial51
June 2021 | 0 Respostas
Catherine a quatre ans de moins que David.L'année prochaine,ils auront a eux deux 66ans.Quel est donc l âge de Catherine
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Verified answer
Hello,a+(a+20)+(a+40)=180
=> 3a+60=180
=>3a=180-60
=>3a=120
=>a=120/3
=>a=40(°)