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2 tháng 8 2017

I do not know English

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...
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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.

2
13 tháng 12 2018

cậu lạc đè rồi

27 tháng 12 2020

câu 1:16 ; câu 2 : ai mà biết được 

23 tháng 2 2017

Exer 1:

Solution:

Suppose that, the unknown number is: \(\overline{x215}\) (where x \(\in\) N).

When we clean three digits then the smaller number is \(\overline{x}\).

We have: \(\overline{x215}\) + \(\overline{x}\) = 78293

\(\Rightarrow\) 1000. \(\overline{x}\) + 215 + \(\overline{x}\) = 78293

1001. \(\overline{x}\) = 78078

x = 78

Thus, we found two natural number: 78215 and 78.

Exer 2:

Solution:

We have: x + 2y \(⋮\) 5

\(\Rightarrow\) 2x + 4y \(⋮\) 5

(2x + 4y) + (3x - 4y) = 5x \(⋮\) 5

\(\Rightarrow\) 2x + 4y \(⋮\) 5

Deduce 3x - 4y \(⋮\) 5.

Exer 3:

Solution:

We have: 2x + 5y \(⋮\) 7

4x + 10y \(⋮\) 7

(4x + 10y) - (4x + 3y) = 7y \(⋮\) 7

\(\Rightarrow\) 4x + 10y \(⋮\) 7

Deduce 4x + 3y \(⋮\) 7.

9 tháng 12 2015

đây là Toán Tiếng Anh đúng không bạn ?

day la toan ko phai tieng anh

 

Câu 1:A farmer plants 450 seeds per row in his field. How many FULL ROWS would he be able to plant with 50000 seeds?Câu 2:It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?Câu 3:If you make the 8000km trip, about how much would it cost at today's prices of 3.00 dollar per liter of gas when your car gets 25km per liter?Câu 4:What is the next...
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Câu 1:
A farmer plants 450 seeds per row in his field. How many FULL ROWS would he be able to plant with 50000 seeds?

Câu 2:
It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?

Câu 3:
If you make the 8000km trip, about how much would it cost at today's prices of 3.00 dollar per liter of gas when your car gets 25km per liter?

Câu 4:
What is the next number in the pattern: 25, 23, 21, 19, 17, ...?

Câu 5:
What is the value of the following expression: ?

Câu 6:
The difference between two numbers is 3. Their sum is 33. What are the two numbers?
(write your answer in order from least to greatest and use ";" between the numbers)

Câu 7:
Examining the operation of how to use the number of days to find the number of beans in a classroom jar is shown the table. On day 31, how many beans would be in the jar?

Câu 8:
Use the table of values to help you find the value of 9 feet in inches.

Câu 9:
If  and , what is the value of ? 

Câu 10:
What is the next number in the pattern: 1, 8, 27, ...?
 

 

5
5 tháng 11 2016

it's math for vietnamese ok 

5 tháng 11 2016

chịu tk nhé @@@@@@@@@@@@