{"id":12968,"date":"2017-11-01T12:12:03","date_gmt":"2017-11-01T12:12:03","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=12968"},"modified":"2022-01-09T00:15:33","modified_gmt":"2022-01-09T00:15:33","slug":"para-uma-festa-a-marta-comprou-quatro-embalagens-de-pao-e-duas-embalagens-de-queijo","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=12968","title":{"rendered":"Para uma festa, a Marta comprou quatro embalagens de p\u00e3o e duas embalagens de queijo"},"content":{"rendered":"<p><ul id='GTTabs_ul_12968' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_12968' class='GTTabs_curr'><a  id=\"12968_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_12968' ><a  id=\"12968_1\" onMouseOver=\"GTTabsShowLinks('Resolu\u00e7\u00e3o'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Resolu\u00e7\u00e3o<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_12968'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p><a href=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo.png\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"12970\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=12970\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo.png\" data-orig-size=\"602,246\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"P\u00e3o e queijo\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo.png\" class=\"alignright wp-image-12970 size-medium\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo-300x123.png\" alt=\"\" width=\"300\" height=\"123\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo-300x123.png 300w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo.png 602w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Para uma festa, a Marta comprou quatro embalagens de p\u00e3o e duas embalagens de queijo.<\/p>\n<p>Ao chegar a casa, a m\u00e3e perguntou-lhe:<\/p>\n<p>&#8211; Quanto custou cada embalagem de p\u00e3o?<\/p>\n<p>A Marta n\u00e3o sabia, mas informou a m\u00e3e de que as duas embalagens de queijo custaram 4,70 \u20ac e, ao todo, gastou entre 10 \u20ac e 15 \u20ac.<\/p>\n<p>Entre que valores varia o pre\u00e7o de cada embalagem de p\u00e3o?<br \/>\nExplica a tua resposta.<\/p>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_12968' onClick='GTTabs_show(1,12968)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_12968'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<p>Designado por \\(x\\) o pre\u00e7o, em euros, de cada embalagem de p\u00e3o, vem:<\/p>\n<p>\\[\\begin{array}{*{20}{l}}{10 &lt; 4x + 4,7 &lt; 15}&amp; \\Leftrightarrow &amp;{10 &#8211; 4,7 &lt; 4x &lt; 15 &#8211; 4,7}\\\\{}&amp; \\Leftrightarrow &amp;{5,3 &lt; 4x &lt; 10,3}\\\\{}&amp; \\Leftrightarrow &amp;{1,325 &lt; x &lt; 2,575}\\end{array}\\]<\/p>\n<p>O custo, em euros, de cada embalagem de p\u00e3o pertence ao intervalo\u00a0\\({\\left] {1,325;\\;2,575} \\right[}\\).<\/p>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_12968' onClick='GTTabs_show(0,12968)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado Para uma festa, a Marta comprou quatro embalagens de p\u00e3o e duas embalagens de queijo. Ao chegar a casa, a m\u00e3e perguntou-lhe: &#8211; Quanto custou cada embalagem de p\u00e3o? A Marta&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":12970,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[213,97,258],"tags":[270,445],"series":[],"class_list":["post-12968","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-9--ano","category-aplicando","category-os-numeros-reais","tag-inequacao","tag-intervalo-de-numeros-reais"],"views":1504,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2017\/11\/PaoQueijo.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/12968","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12968"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/12968\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/12970"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12968"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12968"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12968"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=12968"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}