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tia_tia [17]
2 years ago
6

DUE TMR HELP PLSSS

Mathematics
1 answer:
liq [111]2 years ago
5 0

\huge \sf \dag \: Answer :

\longmapsto \rm 2x + 6x + 10 = 0

\longmapsto \rm 8x =  - 10

\longmapsto \sf x =  -  \frac{10}{8}

Because this is just an ordinary linear equation and only has 1 value of x that meets it, it can be concluded that the value of \tt x_1 is equal to \tt x_2, then:

\longmapsto \sf x_2 + x_2

\longmapsto \sf ( -  \frac{10}{8} ) + ( -  \frac{10}{8} )

\longmapsto \sf   \boxed{\boxed{ \bf{ -  \frac{20}{8}}} }

-I Hope This Helps!!

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Para recortar algumas figuras geométricas, um aluno utilizou uma cartolina com 1mx0,8m. Sabendo que ele recortou 2 triângulos, a
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Answer:

7190 cm²

Step-by-step explanation:

Para recortar algumas figuras geométricas, um aluno utilizou uma cartolina de 1 m x 0,8m.

Passo 1

Determine a área de todo o papelão

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Nós convertemos para cm²

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Multiplicação cruzada

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= 8000 cm²

Passo 2

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Encontramos a área de um triângulo

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= 1/2 × 20 × 30

= 300cm²

Ele cortou 2 triângulos Portanto, o são dos dois triângulos = 300cm² × 2

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etapa 3

Ele também cortou 2 trapézios ambos com bases de 10cm e 20cm e altura de 7cm.

A área de um trapézio =

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Ele cortou dois trapézios, portanto

A área dos dois trapézios do corte = 105cm² × 2

= 210 cm²

Passo 4

A área total do papelão que foi cortado = 600cm² + 210cm²

= 810 cm²

Etapa 5

Determine em cm² quanto de papelão sobrou.

Isso é calculado como:

Área total do papelão - Área total que foi cortada

= 8000 cm² - 810 cm²

= 7190 cm²

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