AC + BC = AB = 10
AC - BC = 4
=> AC = ( 10+4)/2 = 7
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Given a segment AB = 100cm. Let C be a point between A and B. Let M, N be respectively the midpoint of the segment BC, AC. Find the length of the segment MN.
cho một đoạn thẳng AB = 4cm. Cho X là một điểm như vậy A là trung điểm của đoạn XB. Tìm chiều dài của đoạn thẳng XA.
cái này là tiếng anh mình dịch sang tiếng việt nên có thể sai sốt, bản gốc đây ạ: given a segment AB=4cm. Let X be a point such A is midpoint of segment XB. Find the length of segment XA.
LÀM VẬY ĐÚNG KO???Bài thi số 1Điền kết quả thích hợp vào chỗ (...): 12:09Fill in the blank with the suitable number (Note: write decimal number with the dot between number part and fraction part. Example: 0.5)Câu 1:The succeeding number of -7 is 7Câu 2:Given that M is the midpoint of the segment AB. Calculate the length of the segment MB if AB 10cm.Answer: MB5cmCâu 3:What is the absolute value of -4?Answer: Th...
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LÀM VẬY ĐÚNG KO???
Bài thi số 1
Điền kết quả thích hợp vào chỗ (...):
12:09
Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)
Câu 1:
The succeeding number of -7 is 7
Câu 2:
Given that M is the midpoint of the segment AB. Calculate the length of the segment MB if AB = 10cm.
Answer: MB=5cm
Câu 3:
What is the absolute value of -4?
Answer: The absolute of -4 is4
Câu 4:
Find the value of
Answer: A=5
Câu 5:
Given that the distance from point a to point -1 on the number line is 7. Find a if a > 0.
Answer: a=6
Câu 6:
Find the opposite number of .
Answer: It is -28
Câu 7:
Find the greatest negative integer.
Answer: It is -1
Câu 8:
Given a segment AB = 4cm. Let C be a point such that A is midpoint of segment CB. Find the length of segment CA.
Answer: CA=4cm
Câu 9:
Given 20 points. Draw the lines through the 2 points of these 20 points. How many lines are there if only 3 of 20 points are aligned?
Answer: There are 188 lines.
Câu 10:
Find the smallest natural number which has exactly nine divisors.
Answer: 36
Line segment AB is 60cm long . Point M is the midpoint of line segment AB .Calculate MA .
Answer : AM ...... cm
We have two circles (A; 3cm) and (B; 2cm) intersecting at C, D. AB = 4cm. The circles with center A, B intersect segment AB at K, I. respectively.
a, Calculate CA, CB, DA, DB.
b, Is I the midpoint of segment AB?
c, Calculate IK.
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Question 1:The least common multiple of 330; 65; 15 is Question 2:Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.The composite numbers are (Write numbers in order from the least to the greatest and use ;)Question 3:The common factors of 18 and 27 are (Write numbers in order from the least to the greatest and use ;)Question 4:Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is Question 5:Find four integer numbers a,b,c,d such thata + b + c + d 1a + c + d 2a + b + d...
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Question 1:
The least common multiple of 330; 65; 15 is
Question 2:
Given seven numbers: 25; 17; 39; 43; 239; 1021; 1023.
The composite numbers are
(Write numbers in order from the least to the greatest and use ";")
Question 3:
The common factors of 18 and 27 are
(Write numbers in order from the least to the greatest and use ";")
Question 4:
Given the set of even numbers: {2; 4; 6; …; 100}.The number of elements is
Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=()
Question 6:
Find a four-digit natural number that is less than 2015.If the thousands digit is erased,the number will be decreased by 9 times.
Answer:The number is
Question 7:
Calculate: 1×2+2×3+⋯+100×101=
Question 8:
The term of the expression A=1-7+13-19+25-31+⋯ is
Question 9:
Given the expression A= ...
Find the value of n such that 2A+3=
Answer: n=
Question 10:
A natural number has six digits and the units digit is 4.If the units digit is moved to the first row then the number will be increasedby 4 times.The number is
Câu 1: Given that is divisible by 9. What is the value of ? Câu 2: How many elements of the set A are divisible by 9?Câu 3:A is a set of multiples of 12 less than 12. How many elements does the set A have?Câu 4:Find the remainder when is divided by 3.Câu 5:Given that 511 is the sum of two prime numbers and , . What is the value of ?Câu 6:Given that . Find the value of .Câu 7:Given that . How many divisors does the number A have?Câu 8:Find the natural number so that the product of and 5 is a...
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Câu 1: Given that is divisible by 9. What is the value of ?
Câu 2: How many elements of the set A are divisible by 9?
Câu 3:A is a set of multiples of 12 less than 12. How many elements does the set A have?
Câu 4:Find the remainder when is divided by 3.
Câu 5:Given that 511 is the sum of two prime numbers and , . What is the value of ?
Câu 6:Given that . Find the value of .
Câu 7:Given that . How many divisors does the number A have?
Câu 8:Find the natural number so that the product of and 5 is a prime number.
Câu 9:
Given that . How many divisors does the number A have?
Câu 10:
Given that . How many divisors the number A have?
27 tháng 11 2023 lúc 20:30
true or false
1, there is only one midpoint for any given line segment
2, if AB+BC=AD then B lies between A and D
3, if AB+BC=AC then B is the midpoint of AC
4, If C is the midpoint of AB then AC=BC
5, if B belongs to Ox, A belongs to Oy, Ox and Oy are opposite then O is the midpoint of AB
The lengths in cm of three sides of a triangle are three consecutive odd numbers.
Knowing that the perimeter of the triangle is 40.5 dm, find the length of the longest side of the
triangle.
A.137cm
B.135cm
C.143cm
D.145cm