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Nina [5.8K]
3 years ago
10

How long was each class?

Mathematics
2 answers:
FromTheMoon [43]3 years ago
7 0
Aerobics=20 yoga= 50

20 + 30 = 50 (30 more) and then 20 + 50 = 70 aka 1 hour 10 mins
Digiron [165]3 years ago
7 0
Each class was 35min long
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Answer:

A) 12x + 10y

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Step-by-step explanation:

A) A fórmula para calcular o perímetro de um retângulo é dada como:

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= 2L + 2W

Onde

L = comprimento do retângulo

W = largura do retângulo

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O comprimento de um retângulo é 6x e sua largura é 5y.

A expressão algébrica que representa o perímetro do retângulo =

Perímetro de um retângulo = 2 (L + W)

= 2L + 2W

L = 6x, W = 5y

= 2 (6x) + 2 (5y)

= 12x + 10y

A expressão algébrica que representa o perímetro do retângulo é

P = 12x + 10y

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P = 12x + 10y

x = 4cm

y = 7cm

Perímetro = 12 (4) + 10 (7)

Perímetro = 48cm + 70cm

Perímetro do retângulo = 118cm

Portanto, o valor numérico do perímetro é 118cm

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