英语翻译请翻译并解答There are 10 questions in a math contest ,Accordin
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英语翻译
请翻译并解答There are 10 questions in a math contest ,According to the standard for evaluation,the student can get 10 points if he answers a question correctly,and he will be deduvted two points if he gives wrong answer tu a question.Xiao Ming has finished all the ten questions and tinally gets 76 points.How many questions are there which he answers correctly?
请翻译并解答There are 10 questions in a math contest ,According to the standard for evaluation,the student can get 10 points if he answers a question correctly,and he will be deduvted two points if he gives wrong answer tu a question.Xiao Ming has finished all the ten questions and tinally gets 76 points.How many questions are there which he answers correctly?
一个数学比赛中,有10道题目.按比赛规则,答对一题得10分,答错一题扣2分.小明完成了比赛,得分76分.请问,小明答对了几题?
再问: 请问你知道该怎样做吗?
再答: 假设小明答对了X题,那么小明答错了10-X 题 Xx10-(10-x)x2=76 10X-20+2X=76 12X=96 X=8 小明答对了8题
再问: 请问你知道该怎样做吗?
再答: 假设小明答对了X题,那么小明答错了10-X 题 Xx10-(10-x)x2=76 10X-20+2X=76 12X=96 X=8 小明答对了8题
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