Toán tiếng anh: A rectangle has length pcm and width qcm, where p and q are integer. If p and q satisfy the equation pq+q=13+q2 then the maximum possible area of the rectangle is.........
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a rectangle has length p and breadth p where p,q are intergers . If p, q satisfy the equation pq+q=13+q^2. What is the maximun of the area of the rectangle?
A rectangle has length p cm, width q cm; p,q are integers. If p,q satisfy the equation pq+p=p^2+13. Find the maximum of the area of the rectangle
1) The rectangle has length p and breath q (cm), where p and q are intergers. If p and q satisfy the equation pq+q=13 + q2
then the maxnium area of the rectangle
2) Let a,b and c be positive intergers such that ab + bc=518 and ab-ac=360. Find the largest value of the product abc.
P/s: As you may now, These are some questions from the 8 round of Math Violympic. Plz help me as much as you can! Thanks for all!
Ta có: \(pq+q=13+q^2\Leftrightarrow q\left(p+1\right)=13+q^2\)
Vì\(q^2⋮q\Leftrightarrow13⋮q\Leftrightarrow\left[{}\begin{matrix}q=1\\q=13\end{matrix}\right.\)
Nếu q =1 thì:\(p+1=14\Leftrightarrow p=13\)
\(\Rightarrow pq=13\left(cm^2\right)\)(1)
Nếu q=13 thì:\(13p+13=182\Leftrightarrow p=13\)
\(\Rightarrow pq=169\left(cm^2\right)\)(2)
Từ (1)(2) ta có: \(max\left(pq\right)=169\left(cm^2\right)\)
Bạn xem hộ mình sai ở đâu k
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câu 2 thì dựa vào đây nhưng chưa đầy đủ đâu bạn làm nốt nhé https://hoc24.vn/hoi-dap/question/197024.html?pos=675443
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Hey guys! I have to do a City's Math Violympic on March 9th ( who like me, raise hands, lol :)) so it is not enough time to solve this very difficult problem, right??? Plz help me,guys! God bless you all xx. Sending you a big hug!
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the length and width of a rectangle are in the ratio of 5:12. If its rectangle has an area of 240 square centimeters then what is the length in centimeters of its diagonal?
the length of the diagonal is 26 centimeters
k cho mình nha cảm ơn
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the area of a rectangle is 70m2 . if its length is increased by 10% and its width is decreased by 20% then the area of the new rectangle is ....m2
The area of a rectangle is 50m2. If it's length is increased by 10% and it's width is decreased by 20% then the area of new rectangle is ...............m2.
Đề bài như sau : Diện tích của hình chữ nhật là 50 m2 . Nếu tăng chiều dài lên 10% , giảm chiều rộng đi 20% thì sau đó diệ tích của hình chữ nhật mới là ............m2 ?
Giải :
Giả sử tổng của chiều dài và chiều rộng là 100% .
Nếu tăng chiều dài lên 10% thì tổng mới là :
100% + 10% = 110%
Nếu giảm chiều dài đi 20% thì tổng mới là :
100% - 20% = 80%
Vậy diện tích mới là :
110% x 80% = 8800%
Mà 8800% = 88 m2 nên diện tích mới là 88 m2 .
Đáp số : 88 m2 .
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Đáp số là 88 m2 bạn nhé !
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The area of a rectangle is 50m2. If it's length is increased by 10% and it's width is decreased by 20% then the area of new rectangle is ...............m2.
The area of a rectangle is 50m2. If it's length is increased by 10% and it's width is decreased by 20% then the area of new rectangle is 88m2
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Trả lời :..............................................................
88 m2
Hk tốt,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
k nhé
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The area of a rectangle is 50 m vuong . If it's length is increased by 10%and it's width is decreased by 20% then the area of new rectangle is ?
the area of a rectangleof a rectangle is 50 m2 . If its length is increased by 10% and its width is decreased by 20% then the area of new rectangle is .....m2