P x 6.28= 19.72 _` ^\r9. 27\ra a& 2939496 ?:;<=>1 2 ,bU a = 12, b=6, c=4, d=3, e = 2 ,`pJ:;\r27\r10. 55\rcdeI+f;ghi5 j +klmno5 j +3 ;gphiq 15j 8?QRr\rsm&OP?+`pM15j tuvklm1 ;gwxy?z{OP+|klm15\rj /;g8x~rs15x4 = 60 _j ^,okl60+1.5 =40 _j /;g^8;\rf;gi40+15 = 55j 8\r \r1. 7\r#'(
6X j+,(
6“ j+5 (
6 c d e 6 {\r2 2\r.I\r38.5x II =40x + 36?^? + 35- ^ - , x = 7\r2. 84\r# > 1 0 ,, > 1 8 , # ? & x +,6 {\rI----------------------------------1"VT\r10+18x 7 5 = IO.r+? 1 , x = 84\r3. 30\rQR?kl&ikl?3 =+?\?z{i10+`p\?\rz{iD10+ 1- + = 15 _^+f iy¡D308\r4. 80\r¢£gu¢¤g?kl30:24 = 5 :4 ,`pP¥?rs¦¢£gu¢¤g?g§t\r 4 :5 ,¨©ª«i¢6 ;g+`p:h¢£6 x ± x 30 = 8j ^\r4 + 5
全文预览
