Violympic toán 8
Các câu hỏi tương tự
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.
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
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
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:
Toán tiếng anh: Let a, b, c be the possible integer such that ab+bc=518 and ab-ac=360. Find the largest possible value of the product abc
Find all natural numbers having two digit , knowing that twice the units digit 1 more than the ten digit , and if we write that two digits in reverse order, we get a new number which is 27 less than the old one
given the coordinate system in the plane with H(2;5) let K(a;b) be the point symmectric to H with respect to the origin O.What is the value of a+b
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!!!
Therere three distinct whole numbers a,b,c displayed on three cards. In each round, each of three students picks one card randomly in turn then record their numbers. They play at least two rounds. If after the last round, the 1st one gets 20 points totally, the 2nd one gets 10, the 3rd one gets 9 and the 2nd one picks number c at the last round, then who picks number b at the first round?
A. The 1st one
B. The 2nd one
C. The 3rd one
D. Cant be found out
Đọc tiếp
There're three distinct whole numbers a,b,c displayed on three cards. In each round, each of three students picks one card randomly in turn then record their numbers. They play at least two rounds. If after the last round, the 1st one gets 20 points totally, the 2nd one gets 10, the 3rd one gets 9 and the 2nd one picks number c at the last round, then who picks number b at the first round?
A. The 1st one
B. The 2nd one
C. The 3rd one
D. Can't be found out