Contact us
Choose a category below so we can get back to you as quickly as possible.
1.(1)已知比例中兩個內項的積是24,.(此處文字省略),另一個外項是(4).(2)已知比例中兩個外項的積是3.2,.(此處文字省略),另一個內項是(0.4).2.(此處文字省略).(1)3.2∶4=4∶5(3.2×5=4×4)(2)X∶y…
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.