2) Vì ABC và RTS là 2 tam giác đồng dạng nên:
\(\frac{AB}{RT}=\frac{BC}{TS}\Leftrightarrow\left(\frac{8}{4}\right)=\frac{x}{5}\Rightarrow x=10\)
1) ABC is a triangle where M is the midpoint of segment BC.
MD and ME are two bisectors of triangles AMB and AMC respectively.
If AM= m; BC = a . Then DE = ???
2)\(\dfrac{1}{\left(x+29\right)^2}+\dfrac{1}{\left(x+30\right)^2}=\dfrac{5}{4}\)
What is the product of all real solutions to the equation above?
3) The sum of all possible natural numbers n such that
\(n^2+n+1589\) is a perfect square is.....
4) Given that x is a positive integer such that x and x+99 are perfect squares
The sum of integer x is ...
5)The operation @ on two numbers produces a number equal to their sum minus 2. The value of
(...((1@2)@3....@2017)
6) Given f(x)=\(\dfrac{x^2}{2x-2x^2-1}\)
=> \(f\left(\dfrac{1}{2016}\right)+f\left(\dfrac{2}{2016}\right)+f\left(\dfrac{3}{2016}\right)+...+f\left(\dfrac{2016}{2016}\right)\)
Các bn giúp mk vs >>> tks nha!!!
Question 1:In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is____
Q2:Find the highest common factor of 147x and 98y if HCF(x;y)=1
Q3: A pattern of triangles is made from matches shown as follows
if there are 207 matches used, how many triangles has been formed
Given a set three integers greater than 1.
Let A be the number that's 1 less than the product of three given integers.
Let B be the product of numbers that're 1 less than three given integers.
Known that A is a multiple of B.
How many sets can you find.
A. 1
B. 2
C. 3
D. 4
Question 1: Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Question 2: In a magic triangle, each of the six whole numbers 10; 11; 12; 13; 14; 15 is placed in one of the circles so that the sum, S, of the three numbers on each side of the triangle is the same. The largest possible value for S is______
Question 3: A pattern of triangle is made from matches shown as follows:
If there 2017 matches used, how many triangles has been formed?
P/s: Please help me! If possible, write the detail answer! Thanks for your help!!!
The average of three numbers is 42. All three are whole positive number and are different from each other.
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer: ......
find the smallest positive integer k for which \(\sqrt{6075\cdot k}\) is a whole number
Answer : the smallest positive integer k is ......
2. find the value of k such that the remainder is the greatest
k/13= 11Rx
K=
Let a, b and c be positive integers. The sum of 160 and the square of a is equal the sum of 5 and the square of b. The sum of 320 and the square of a is equal to the sum of 5 and the square of c, a is
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.
m and n are positive integers such that 10(m^2+1)=n^2+1\(\), where m^2+1 \(\) is a prime number. The number of pairs (m,n) is...
Các bạn giải chi tiết giúp mình với, mình cảm ơn nhiều ạ!!
