{"common":{"save":0,"post_id":"7951","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8756","post_id":"7951","mon_id":"1159278","chapter_id":"1159330","question":"<p>M\u1ed9t sân v\u1eadn \u0111\u1ed9ng hình ch\u1eef nh\u1eadt v\u1edbi chi\u1ec1u dài h\u01a1n chi\u1ec1u r\u1ed9ng 37 m và di\u1ec7n tích là 7140 m². G\u1ecdi chi\u1ec1u r\u1ed9ng m\u1eb7t sân là x (m) v\u1edbi x > 0. Khi \u0111ó, chi\u1ec1u dài m\u1eb7t sân là<\/p>","options":["<strong>A.<\/strong> x + 37 (m)","<strong>B.<\/strong> x – 37 (m)","<strong>C.<\/strong> 37x (m)","<strong>D.<\/strong> x : 37 (m)"],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> x + 37 (m).<\/span><\/p><p>Chi\u1ec1u dài h\u01a1n chi\u1ec1u r\u1ed9ng 37 m. Khi \u0111ó, chi\u1ec1u dài m\u1eb7t sân là x + 37 (m).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-22 07:41:04","option_type":"txt","len":2},{"id":"8757","post_id":"7951","mon_id":"1159278","chapter_id":"1159330","question":"<p>M\u1ed9t khu v\u01b0\u1eddn hình ch\u1eef nh\u1eadt có chi\u1ec1u r\u1ed9ng nh\u1ecf h\u01a1n chi\u1ec1u dài 6 m. G\u1ecdi chi\u1ec1u dài khu v\u01b0\u1eddn là x (m). Ch\u1ecdn \u0111áp án \u0111úng:<\/p>","options":["<strong>A.<\/strong> x = 6","<strong>B.<\/strong> x > 6","<strong>C.<\/strong> x < 6","<strong>D.<\/strong> x <span class=\"math-tex\">$\\ne$<\/span> 6"],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> x > 6.<\/span><\/p><p>Chi\u1ec1u r\u1ed9ng khu v\u01b0\u1eddn có kích th\u01b0\u1edbc x – 6 (m). Nên x > 6.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-22 07:44:26","option_type":"math","len":0},{"id":"8758","post_id":"7951","mon_id":"1159278","chapter_id":"1159330","question":"<p>M\u1ed9t m\u1ea3nh v\u01b0\u1eddn hình ch\u1eef nh\u1eadt có chi\u1ec1u dài h\u01a1n chi\u1ec1u r\u1ed9ng 4 m, chu vi c\u1ee7a m\u1ea3nh v\u01b0\u1eddn là 40 m. G\u1ecdi chi\u1ec1u dài c\u1ee7a m\u1ea3nh v\u01b0\u1eddn là x (m). \u0110i\u1ec1u ki\u1ec7n c\u1ee7a x là:<\/p>","options":["<strong>A.<\/strong> x < 20","<strong>B.<\/strong> x < 4","<strong>C.<\/strong> x > 4","<strong>D.<\/strong> 4 < x < 20"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 4 < x < 20.<\/span><\/p><p>Chi\u1ec1u r\u1ed9ng m\u1ea3nh v\u01b0\u1eddn là: x – 4 (m).<br \/>N\u1eeda chu vi m\u1ea3nh v\u01b0\u1eddn là: 40 : 2 = 20 (m).<br \/>Do \u0111ó \u0111i\u1ec1u ki\u1ec7n c\u1ee7a x là 4 < x < 20.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"127","test":"0","date":"2024-11-22 07:48:00","option_type":"txt","len":2}]}