1cm =500:5=100 sấp giấy
Ta có 0,1cm=100:10=10(sấp giấy)
đs: 10 sấp giấy
1cm =500:5=100 sấp giấy
Ta có 0,1cm=100:10=10(sấp giấy)
đs: 10 sấp giấy
A pattern of triangles is made from matches shown as follows:
If there are 2017 matches used, how many triangles have been formed?
Answer: triangles.
Giúp em với. Em chẳng hiểu đề.
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!!!
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
There're four black box and each box has the same number of marbles. Only one of the following statements is correct about the number of marbles in it.
- Five or Six
- Seven or Eight
- Six or Seven
- Seven or Five
How many marbles are there in each box?
A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.
How many of the 120 students have neither a dog nor a cat?
Answer: ........ students.
Alice is playing with words. At each tick of her grandfather’s clock she swaps two letters. What is the smallest number of clock ticks during which she can change WORDS to SWORD?(A) 3 (B) 4 (C) 6 (D) 7 (E) 8
This pinwheel star is formed by rotating a right-angled triangle
around one of its corners. What is the angle at each of the nine
tips that are marked with dots?
(A) 30◦
(B) 40◦
(C) 45◦
(D) 50◦
(E) 60◦
I have twelve paint tins each capable of holding twelve litres. Half of them are half
full. A third of them are a third full. The rest are one-sixth full. How many litres of
paint do I have in total?
(A) 48 (B) 50 (C) 52 (D) 54 (E) 56
1 How many triples of integers (a,b,c) are there such that
?
2
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
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