given the natural numbers x and y which are larger than 1. which fraction below gives the largest value?
\(a;\frac{X}{Y-1}\) \(B;\frac{X}{Y+1}\) \(C;\frac{2xX}{2xY+1}\) \(D;\frac{2xX}{2xY-1}\)
lời giả bằng tiếng việt ok
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1.Given the quadrilateral ABCD with two diagonals perpendicular and AB = 8cm, BC = 7cm, AD = 4cm. Evaluate CD.
2.Given three consecutive even natural numbers, which have the product of last two numbers is 80 greater than the product of first two numbers.
Find the largest number.
Answer: The largest number is
2) đặt 3 số có dạng a; a+2, a+4 rồi khai triển ra
số lớn nhất là 22
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Given three consecutive even natural numbers, which have the product of last two numbers is 80 greater than the product of first two numbers.
Find the largest number.
Answer: The largest number is ............. .
ở đây chỉ hỏi đáp toán,đố vui chứ ko cs hỏi tiếng anh ở đây !!!!!!!!
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Given three consecutive even natural numbers, which have the product of last two numbers is 80 greater than the product of first two numbers.
Find the largest number.
(x + 1)(x + 2) - x(x + 1) = 80
(x + 1)(x + 2 - x) = 80
(x + 1)2 = 80
x + 1 = 40
=> x = 39
=> x + 2 = 39 + 2 = 41
Vậy số lớn nhất là 41.
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ngồi phán đề nên ko biết dịch đúng ko, làm sai thì đừng chửi nhá
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Đề bài : cho 3 số tự nhiên liên tiếp. Tích 2 số đầu cuối lớn hơn tích 2 số đầu là 80.
Gọi 3 số tự nhiên liên tiếp là a (a + 1) (a + 2).
Ta có (a + 1)(a + 2) = a(a + 1) + 80
=> (a + 1)(a + 2) - a(a + 1) - 80 = 0
=> a2 + 3a + 2 - a2 - a - 80 =0
=> 2a - 80 = 0 => a = 40
Vậy số lớn nhất là a + 2= 40 +2 =42
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Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5...
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Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5 : Find A, if A is 3 less than the average of 48; 55; 29 and A. The value of A is…
Câu 6 : The sum of denominator and numerator of a fraction is 121 and the fraction is equal to 4/7. Find the denominator of the fraction?
Câu 7 : The sum of two numbers is equal to 77. If the first number is multiplied by 8 and the second by 6, the two product are equal. The larger of these numbers is…
Câu 8 : Which is the greatest 2 - digit number divisible by 2, 3 and 4?
Câu 9 : Calculate: (1 + 2/5) x 6/7.
Câu 10 : Give the number sequence: 1, 4, 7, 10, 13, … Find the 15th term of the number sequence.
câu 1:16 ; câu 2 : ai mà biết được
For fraction 14/20. Find the natural number known as the denominator in the denominator and keep the atomic number, which is given a new fraction of 1/4.
Đối với phân đoạn 14/20. Tìm số tự nhiên được gọi là mẫu số trong mẫu số và giữ số nguyên tử, được cho một phần mới của 1/4.
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Given that A, B , C represent three distinct digits. If 7A90901 is larger than 79B9001, which is in turn larger than 798900C, what is the value of A x B x C?
When m and n are natural munbers greater than 1, which of the following for expressions cannot be prime numbers?
A. n(n+1)+m
B. n(n+1)+m2
C. n(n+1)+2m
D. n(n+1)+3m
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Exer 1: There is a division with the quotient is 6 and the remainder is 3. The sum of dividend, divisor and remainder are 195. Find the dividend are divisor.
Exer 2: Prove that: Amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3: Given natural number, n overline{1ab1}. Let m be the natural number which is written the opposite respectively of n. Prove that the different of n and m divisibles by 90.
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Exer 1: There is a division with the quotient is 6 and the remainder is 3. The sum of dividend, divisor and remainder are 195. Find the dividend are divisor.
Exer 2: Prove that: Amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3: Given natural number, n = \(\overline{1ab1}\). Let m be the natural number which is written the opposite respectively of n. Prove that the different of n and m divisibles by 90.
Exer 1:
Trả lời:
The sum of dividend and divisor are:
195 - 3 = 192
Because the quotient is 6.
The divisor is:
(192-3) : (6+1) = 27
The dividend is:
192 - 27 = 165
Exer 2:
Trả lời:
Let three unknow numbers be: n, n + 1, n + 2.
Because n has three forms: 3k, 3k + 1, 3k + 2.
+) If n
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Xin lỗi, mình vẫn chưa viết xong, rồi mình viết tiếp đây:
+) If n = 3k then there is only n divisibles by 3.
+) If n = 3k + 1 then there is only n + 2 divisibles by 3.
+) If n = 3k + 2 then there is only n + 1 divisibles by 3.
Thus, amoney three consecutive natural numbers, there is one only one the number which divisibles by 3.
Exer 3:
Trả lời:
When we written the opposite respectively of n, we obtain \(\overline{1ba1}\).
We have:
\(\overline{1ab1}\) + \(\overline{1ba1}\) = (1000 + 100a + 10b + 1) - (1000 + 100b + 10a + 1)
= 90a - 90b
= 90(a - b)\(⋮\) 90
Thus, the difference of n and m which divisibles by 90.
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Fill in the blank with the suitable numberQuestion 1:There are 49 students in a class. Boy students are the number of girl students. There are girl students in this class.Question 2:Calculate: The value of A is Question 3:Calculate: The value of A is Question 4:Jessica is 8 years old. Her grandmother is of her age. How old is Jessicas grandmother?Answer: years old.Question 5:If the sum of denominator and numerator of a fraction is 52 and the denominator is 18 units more than the numerator th...
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Fill in the blank with the suitable number
Question 1:
There are 49 students in a class. Boy students are the number of girl students. There are girl students in this class.
Question 2:
Calculate:
The value of A is
Question 3:
Calculate:
The value of A is
Question 4:
Jessica is 8 years old. Her grandmother is of her age. How old is Jessica's grandmother?
Answer: years old.
Question 5:
If the sum of denominator and numerator of a fraction is 52 and the denominator is 18 units more than the numerator then the numerator is
Question 6:
Find two consecutive even numbers if the first number is of the second number.
Answer: The second number is
Question 7:
Calculate:
The value of A is
Question 8:
How many natural numbers not greater than 1665 which are divisible by 5?
Answer: numbers
Question 9:
If then is
Question 10:
The sum of three consecutive even numbers is 960. The greatest numbers is
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