Violympic toán 8
Các câu hỏi tương tự
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+29right)^2}+dfrac{1}{left(x+30right)^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 ....
Đọc tiếp
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: 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...
Đọc tiếp
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!!!
if the line through the point (5;-3) and (-2;p) is parallel to the line y= -2x-3, what is the value of p?
trình bày cách giải hộ em
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
alculate: Câu 2:If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?Answer: km. Câu 3:What is the maximum possible area, in , of a rectangle with a perimeter of 20cm?Answer: . Câu 4:Fill the missing number in the blank: Câu 5: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...
Đọc tiếp
alculate:
(1-\frac{1}{3})(1-\frac{1}{4})\ldots(1-\frac{1}{10})(1-\frac{1}{11})]=$)
Câu 2:
If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?
Answer: km. Câu 3:
What is the maximum possible area, in
, of a rectangle with a perimeter of 20cm?
Answer:. Câu 4:
Fill the missing number in the blank:
(3x+10)$)
Câu 5:
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 Câu 6:
Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Answer: Câu 7:
Let(x+b)$)
. Find the value of 
.
Answer:
Câu 8:
In triangle ABC, the measure of angle B is
less than 1.5 times the measure of angle A and the measure of angle C is less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
. Câu 9:
Write the next number in the sequence: 8; 24; 72; Câu 10:
Complete:
^2$)
Giúp mik với, có lời giải chi tiết nha. Thanks cả nhà =))))
If you walk 45 minutes at a rate 4km/h and then run for 30 minutes at a rate of 10km/h, how many kilometers will you have gone at the end of one hour and 15 minutes?
Answer: km. Câu 3:
What is the maximum possible area, in
Answer:
Fill the missing number in the blank:
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 Câu 6:
Find the highest common factor of 147x and 98y if HCF(x;y)=1.
Answer: Câu 7:
Let
Answer:
In triangle ABC, the measure of angle B is
Answer: The measure of angle A is
Write the next number in the sequence: 8; 24; 72; Câu 10:
Complete:
Let ABCD be a trapezoid with bases AB, CD and O be the intersection of AC and BD. If the areas of triangle OAB, triangle OCD are 16cm2, 40cm2respectively and M is the midpoint of BD, then the area of the triangle AMD is .........cm2.
Xem chi tiết
Let ABCD be a trapezoid with bases AB, CD and O be the intersection of AC and BD. If the areas of triangle OAB, triangle OCD are 16cm2, 40cm2respectively and M is the midpoint of BD, then the area of the triangle AMD is .........cm2.
1 How many triples of integers (a,b,c) are there such that
?
2
ABC and RTS are similar triangles.
The value of x is 3 The sum of 2 positive integer numbers is greater than their product if the smaller number is
Find the minimum value of the expression .
Answer: The minimum value is