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Vì A,B,C là tỷ lệ thuận
Theo bài ra ta có: \(\frac{A}{10}=\frac{B}{5}=\frac{A}{50}=\frac{B}{25}\)
\(\frac{B}{25}=\frac{C}{10}\)
=> Ta có: \(\frac{A}{50}=\frac{B}{25}=\frac{C}{10}=\frac{ }{ }\)Và A+B+C=85
Áp dụng tính chất dãy tỉ số bằng nhau ta được:
\(\frac{A}{50}=\frac{B}{25}=\frac{C}{10}=\frac{85}{50+25+10}=1\)
=> A=1 x 50 = 50
B= 1 x 25=25
C= 1 x 10= 10
Vậy:....................
#Châu's ngốc
Quoc Tu Giam the first university in Viet Nam . In 1070 , Emperor Ly Thanh Tong is considered the founder of the Temple of Literature . In1076 , Emperor Ly Nhan Tong is regarded as the builder of the Imperial Academy . In 1484 , Emperor Le Thanh Tong the erection of the first Doctors' world Heritage . In 2003 , the four statue is founders and developers of the Temple of Literature .
Only 10 days left until Christmas !! Have prepared to go into the warm Christmas sweater, hang socks on the chimney (if any) and harmoniously dance and dance to the jubilant Christmas rhythms. So when people reunite together this Christmas, we will hug each other tightly, smile and say the first sentence? Of course it will be Merry Christmas. As a global citizen welcoming a global holiday, we must be able to say Merry Christmas in different languages to congratulate our friends all over the world in order to be right. is that right? For example, Christmas greetings in French, German, Spanish, Chinese, Japanese and many other languages, etc. EF teams around the world sit down and bring the You have 15 Christmas wishes in their native language. Please accept this challenge and prace speaking Merry Christmas in different languages properly!
\(\frac{x}{-2,5}=4,5\)
\(\Leftrightarrow x=4,5\times\left(-2,5\right)\)
\(\Leftrightarrow x=-\frac{45}{4}=-11,25\)
Vậy \(x=-\frac{45}{4}\)
~hok tốt~
Nhầm đề bài rk...lm lại nek:
\(x=\frac{4}{5}\times\left(-2,5\right)\)
\(\Leftrightarrow x=-2\)
VẬY>>>>>
