Question

1) Transforme as porcentagens em números racionais.
a) 30%=
c) 2%=
=
b) 40% =
d) 200%=​

Answer 1

Resposta:

300

20

400

2000

Explicação passo-a-passo:

professor disse

Answer 2

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$\Large\green{\boxed{\rm~~~\red{ 1)~A)}~\gray{30\%}~\pink{=}~\blue{ \dfrac{3}{10} }~~~}}$

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$\Large\green{\boxed{\rm~~~\red{ 1)~B)}~\gray{40\%}~\pink{=}~\blue{ \dfrac{2}{5} }~~~}}$

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$\Large\green{\boxed{\rm~~~\red{ 1)~C)}~\gray{2\%}~\pink{=}~\blue{ \dfrac{1}{50} }~~~}}$

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$\Large\green{\boxed{\rm~~~\red{ 1)~D)}~\gray{200\%}~\pink{=}~\blue{ 2 }~~~}}$

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$\green{\rm\underline{EXPLICAC_{\!\!\!,}\tilde{A}O\ PASSO{-}A{-}PASSO\ \ \ }}$✍

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☺lá, Ceara, como tens passado nestes tempos de quarentena⁉ E os estudos à distância, como vão⁉ Espero que bem❗ Acompanhe a resolução abaixo. ✌

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☔ Quando trabalhamos com percentuais/ porcentagens estamos trabalhando com quantidades de pedaços de mesmo tamanho. Mas que tamanho é este? É o tamanho de um todo dividido em cem partes iguais. Por isso do nome "por cent agem".

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$\large\red{\boxed{\pink{\boxed{\begin{array}{rcl}&&\\&\orange{\rm x~\% = x \cdot \dfrac{1}{100} = \dfrac{x}{100} }&\\&&\\\end{array}}}}}$

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Ⓐ$\bf\large\red{\underline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\quad}}$✍

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$\LARGE\gray{\boxed{\sf\blue{~~30\%~~}}}$

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$\large\blue{\sf = \dfrac{30}{100} }$

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$\large\blue{\sf = \dfrac{3}{10} }$

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$\LARGE\green{\boxed{\rm~~~\red{ A)}~\gray{30\%}~\pink{=}~\blue{ \dfrac{3}{10} }~~~}}$ ✅

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Ⓑ$\bf\large\red{\underline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\quad}}$✍

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$\LARGE\gray{\boxed{\sf\blue{~~40\%~~}}}$

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$\large\blue{\sf = \dfrac{40}{100} }$

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$\large\blue{\sf = \dfrac{2}{5} }$

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$\LARGE\green{\boxed{\rm~~~\red{ B)}~\gray{40\%}~\pink{=}~\blue{ \dfrac{2}{5} }~~~}}$ ✅

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Ⓒ$\bf\large\red{\underline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\quad}}$✍

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$\LARGE\gray{\boxed{\sf\blue{~~2\%~~}}}$

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$\large\blue{\sf = \dfrac{2}{100} }$

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$\large\blue{\sf = \dfrac{1}{50} }$

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$\LARGE\green{\boxed{\rm~~~\red{ C)}~\gray{2\%}~\pink{=}~\blue{ \dfrac{1}{50} }~~~}}$ ✅

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Ⓓ$\bf\large\red{\underline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\quad}}$✍

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$\LARGE\gray{\boxed{\sf\blue{~~200\%~~}}}$

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$\large\blue{\sf = \dfrac{200}{100} }$

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$\large\blue{\sf = 2 }$

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$\LARGE\green{\boxed{\rm~~~\red{ D)}~\gray{200\%}~\pink{=}~\blue{ 2 }~~~}}$ ✅

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$\bf\large\red{\underline{\qquad\qquad\qquad\qquad\qquad\qquad\qquad\qquad}}$☁

☕ $\bf\Large\blue{Bons\ estudos.}$

($\orange{D\acute{u}vidas\ nos\ coment\acute{a}rios}$) ☄

$\bf\large\red{\underline{\qquad \qquad \qquad \qquad \qquad \qquad \quad }}\LaTeX$✍

❄☃ $\sf(\gray{+}~\red{cores}~\blue{com}~\pink{o}~\orange{App}~\green{Brainly})$ ☘☀

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$\gray{"Absque~sudore~et~labore~nullum~opus~perfectum~est."}$