the average of 29 , 33, 18 and k is 27
The value of K is
the average of five numbers is 20. The average of the five numbers is 18 when one of the numbers is changed to 4. What is the original value of the changed numbers
Trả lời
( 20 x 5 ) - ( 18 x 5 ) = 10
10 + 4 = 14
Chúc học tốt
the average of five numbers is 20. The average of the five numbers is 18 when one of the numbers is changed to 4. What is the original value of the changed numbers
The average of A ,B and C is 70 . The value of A is 2 more than B . The value of B is in more than C. Find value A , B and C
the average of m and the greatest 4-digit number is 7625 the value of m is .....
Câu 9:
The average mass of a group of children is 47kg. If of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.
Answer: The average mass of the boys is kg
Câu 10:
A 6-digit number begins with the digit 8. The number is divisible by 9 and all digits of the number are different. What is the possible smallest value of this number?
Answer:
Câu 9 : 52 kg
Câu 10 : 801234
đúng 100% nhớ tk 3 nhé
9.Young male average weight is 47 kg + (47-39) = 55 kg
10. The minimum value is 800 001
The average mass of a group of children is 47kg. If 5/13 of the number of children are girls and their average mass is 39kg. Find the average mass of the boys.
Answer: The average mass of the boys is kg
The average of 57 and M is 43.The value of M is...
Làm hộ mình bài này nhé !
Dịch : trung bình cộng của 57 và M là 43 . Giá trị của M là :
Giải : ta có (57+M):2 = 43 => 57+M=86 =>M=29
Ta có: \(\frac{57+M}{2}=43\Rightarrow57+M=86\Rightarrow M=29\)
Find the whole number A knowing that A is 18 units greater than the average of A, 29 and 45.
Đề dich sang tiêng Việt :
Tìm toàn bộ số A biết rằng A là 18 đơn vị lớn hơn mức trung bình của A, 29 và 45.
Đề nghị xem lại đề
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.
câu 1:16 ; câu 2 : ai mà biết được
Bài 1: Joel is 8 years old. His mother is 34 years old. In how many years' time will his mother's age be three times Joel's age ?
Bài 2: The average of A and B is 20. The average of B and C is 15. The average of C and D is 18. Find the average of A and D ?
( Giải giúp mk với)
bài 2:đáp án là 50
câu 1 thì mk k bt làm
Bài 1: Joel 8 tuổi. Mẹ của cậu 34 tuổi. Hỏi trong bao nhiêu năm nữa, tuổi của của mẹ cậu gấp ba lần tuổi của Joel?
Giải:
Gọi số năm là x => tuổi của mẹ trong x năm là 34 + x; tuổi của Joel trong x năm là 8 + x.
Mà trong x năm tuổi mẹ gấp 3 lần tuổi Joel
=> 34 + x = 3 * (8 + x)
<=> x = 5
Vậy đáp án là 5 năm.