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andrademoreira
@andrademoreira
March 2022
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Na figura a seguir,temos duas circunferencias de mesmo raio,e as medidas estão em uma mesma unidade.Escrevam e resolvam um sistema de duas equações com duas icognitas para determinar a medida do raio das circunferencias.
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Verified answer
3x + 4y = 16
2x + 2y = 9
=================
3x + 4y = 16 (-2)
2x + 2y = 9 (3)
=================
-6x - 8y = -32
6x + 6y= 27
-----------------------------
0 - 2 y = -5
================
5
y = ----- = 2,5 unidades.
2
x = 2
===================
Raio da circunferência mede 2,5 unidades.
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andrademoreira
mt obg :)
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Verified answer
3x + 4y = 162x + 2y = 9
=================
3x + 4y = 16 (-2)
2x + 2y = 9 (3)
=================
-6x - 8y = -32
6x + 6y= 27
-----------------------------
0 - 2 y = -5
================
5
y = ----- = 2,5 unidades.
2
x = 2
===================
Raio da circunferência mede 2,5 unidades.