Dịch: Khoảng cách từ điểm a đến điểm -1 trên trục số là 7. Tìm a biết a<0
Đ/S: -8
Cho mk hỏi bạn thi Violympic Toán Tiếng Anh cấp huyện được bao nhiêu điểm vậy? Mk được 280>>>
huyện mk có bạn được 300. Điểm mk thấp quá 
Câu 1 :Each of cars can take 8 people. How many cars needed to take 124 people?
Câu 2 : How many integer numbers between 200 and 300 are there for which the hundreds digit equals the sum of the other two digits?
Câu 3 : The average of five numbers is 20. The average of the five number is 18 when one of the numbers is chaned to 4. What is the orginal value of the changed number?
Câu 4 :A book has 250 pages starting at number 1. How many digits are there in the page numbers of the book?
Câu 5 : Find A, if A is 3 less than the average of 48; 55; 29 and A. The value of A is…
Câu 6 : The sum of denominator and numerator of a fraction is 121 and the fraction is equal to 4/7. Find the denominator of the fraction?
Câu 7 : The sum of two numbers is equal to 77. If the first number is multiplied by 8 and the second by 6, the two product are equal. The larger of these numbers is…
Câu 8 : Which is the greatest 2 - digit number divisible by 2, 3 and 4?
Câu 9 : Calculate: (1 + 2/5) x 6/7.
Câu 10 : Give the number sequence: 1, 4, 7, 10, 13, … Find the 15th term of the number sequence.
if a is the largest prime number less than 1000 , then what is the smallest non - zero natural number b so that a+b is also a prime number?
Answer: b = .......
find a four-digit natural number that is less than 2015. If the thousands digit it erase, the number will be decreased by 9 time
có ai biết câu trả lời chính xác ko?Giúp dùm mình
From 4 letters ab18 one can make all 18 numbers with 4 digits. (In a number, each digit is written only once.) The sum of all 18 possible numbers is 90216. Find a and b.
A 3 - digit number when divided by 57, the remainder is 27, when divided by 217 the remainder is 60. Find the number.
If the sum of two 2-digit numbers ab and ac and a 1-digit number d is 30, and d>b>c>a. Find ab
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A bag contains green marbles and red marbles only. If the ratio of the number of green marbles to the number of red marbles is 1:4 then ............% of marbles are green.
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when x dividdie 49 the quoctien is greater tha 1 digit number and the remainder is the possible number .find x