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15 tháng 12 2016

ket qua la:156

13 tháng 10 2018

5 x 10 x 25 = 1250(cm3)
1l = 1000(cm3)
Empty space in the carton: 1250 - 1000 = 250(cm3)

 
Question 1:The perimeter of the circle is cm(Write your answer by decimal in the simplest form)Question 2:Calculate: 626.35+525.36 =Question 3:Calculate:(Write your answer in the simplest form)Question 4:There are 60 seats on a train. 40% of the seats are empty. How many empty seats are there in the train?Answer: There are empty seats.Question 5:A car traveled at a constant speed for 5 hours, covering a total distance of 301km. How far did the car travel for one hour?(Write your answer by...
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Question 1:

The perimeter of the circle is cm
(Write your answer by decimal in the simplest form)

Question 2:
Calculate: 626.35+525.36 =

Question 3:
Calculate:
(Write your answer in the simplest form)

Question 4:
There are 60 seats on a train. 40% of the seats are empty. How many empty seats are there in the train?
Answer: There are empty seats.

Question 5:
A car traveled at a constant speed for 5 hours, covering a total distance of 301km. How far did the car travel for one hour?
(Write your answer by decimal in simplest form)
Answer:

Question 6:

The value of m is

Question 7:
Mrs. Jane buys 10kg of flour. She uses 1/6 of it to make a cake and 1/3 of it to make grape pies. How many kilograms of flour are left?
Answer: kg.

Question 8:
45% of M is 72. The value of M is

Question 9:
Emily rides her horse 21km in 7/6 hours. What is her average speed in kilometers per hour?

Answer: Her average speed is kilometers per hour.

Question 10:
Anna multiply together the following numbers

How many zeros are there at the end of the product?
 Answer: There are zeros.

0
27 tháng 2 2016

Câu 1: 40810

Câu 2: 24

Câu 5: 20

Câu 6:5036

Câu 7:6

12 tháng 9 2016

1/ Answer : 18,84 cm

2/ (Mình cộng cả tiền lãi và tiền gốc nha) 

Answer : one million , sixty thousand VND

24 tháng 12 2017

lol +loz = cax minh thu

14 tháng 9 2015

Có bao nhiêu số có hai chữ số N có các tài sản mà tổng của N và số lượng được hình thành bằng cách đảo ngược các chữ số của N là một hình vuông hoàn hảo?
Các SAMF vuông có diện tích 169. Nó chứa hai qua các quảng trường vỗ. Nhỏ hơn của những sqares có một khu vực mà là một phần tư lớn hơn của họ, và các erea của chồng lên nhau của họ là 4. erea của vùng bóng mờ là gì?
Trong sơ đồ, mỗi số nguyên từ 1 đến 9 là phải được đặt trong một vòng tròn, cả chiều ngang và đường chéo, thêm vào 18. 6 và 1 đã được điền vào như hình vẽ. Xác định giá trị của các số đại diện bởi x trong biểu đồ. Biện minh cho câu trả lời của bạn
Bao nhiêu chữ số không số năm 2013 có?

1 tháng 9 2021

copy mạng thì phải ghi "tham khảo"

1 tháng 9 2021

Another alternative explanation.

Mark the leftmost square crossed of each row as ‘r’, and the topmost crossed square of each column with ‘c’. Thus, each square can be marked either ‘r’ or ‘c’ or ‘both r and c’ or ‘neither r nor c’. We’ll examine each case.

For a square to be marked both ‘r’ and ‘c’, the diagonal must pass through the upper left corner of the square.

For square to be marked ‘r’, diagonal should pass through its upper edge.

For square to be marked ‘c’, diagonal must pass through its left edge.

For square to be marked neither ‘r’ nor ‘c’, diagonal must pass through it’s upper as well as left edge, which is not possible. Therefore, no triangles are unmarked.

Now, no. of squares crossed = no. of squares marked ‘r’ + no. of squares marked ‘c’ - no. of squares marked both ‘r’ and ‘c’

Now, no. of r’s = no. of rows (only 1 leftmost crossed square in each row)

no. of c’s = no. of columns (only 1 topmost crossed square in each column)

all rows and columns are crossed by the diagonal.

Therefore, squares crossed = rows + columns - (no. of squares marked both ‘r’ and ‘c’)

Now, only 1 square is marked both ‘r’ and ‘c’ as 199 and 991 are coprime.

Therefore squares crossed = 199 + 991 - 1 = 1189

Look at this video if you want a clearer visual explanation:

1 tháng 9 2021

Tham khảo:

 

Another alternative explanation.

Mark the leftmost square crossed of each row as ‘r’, and the topmost crossed square of each column with ‘c’. Thus, each square can be marked either ‘r’ or ‘c’ or ‘both r and c’ or ‘neither r nor c’. We’ll examine each case.

For a square to be marked both ‘r’ and ‘c’, the diagonal must pass through the upper left corner of the square.

For square to be marked ‘r’, diagonal should pass through its upper edge.

For square to be marked ‘c’, diagonal must pass through its left edge.

For square to be marked neither ‘r’ nor ‘c’, diagonal must pass through it’s upper as well as left edge, which is not possible. Therefore, no triangles are unmarked.

Now, no. of squares crossed = no. of squares marked ‘r’ + no. of squares marked ‘c’ - no. of squares marked both ‘r’ and ‘c’

Now, no. of r’s = no. of rows (only 1 leftmost crossed square in each row)

no. of c’s = no. of columns (only 1 topmost crossed square in each column)

all rows and columns are crossed by the diagonal.

Therefore, squares crossed = rows + columns - (no. of squares marked both ‘r’ and ‘c’)

Now, only 1 square is marked both ‘r’ and ‘c’ as 199 and 991 are coprime.

Therefore squares crossed = 199 + 991 - 1 = 1189

Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)Question 1:A classroom is 6.5 meters long and 4.2 meters wide. What is its area?  Answer: Its area is ................................ (Write your answer by decimal in the simplest form)Question 2:The area of the trapezoid below is  .........................Question 3:What is 50% of 824?Answer: .........................................Question 4:The perimeter...
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Fill in the blank with the suitable number (Note: write decimal number with "the dot" between number part and fraction part. Example: 0.5)

Question 1:
A classroom is 6.5 meters long and 4.2 meters wide. What is its area? 
 Answer: Its area is ................................ 
(Write your answer by decimal in the simplest form)

Question 2:
The area of the trapezoid below is  .........................

Question 3:
What is 50% of 824?
Answer: .........................................

Question 4:

The perimeter of the circle is ...........................cm
(Write your answer by decimal in the simplest form)

Question 5:
45% of M is 72. The value of M is ............................

Question 6:
A car traveled at a constant speed for 5 hours, covering a total distance of 301km. How far did the car travel for one hour? 
(Write your answer by decimal in simplest form)
Answer: .............................

Question 7:
The perimeter of a rectangular land is 90m. Its length is 7m longer than its width. The area of this land is  ..................

Question 8:

The value of m is ..........................

Question 9:
Anna multiply together the following numbers

How many zeros are there at the end of the product? 
 Answer: There are ................... zeros.

Question 10:
If  and n is a natural number then n = ..........................

2
14 tháng 10 2015

3)=412

4)21,98

5)32,4

11 tháng 8 2016

Question 1:  27,3

Question 2: 18

Question 3:  412

Question 4:  21,98 cm

Question 5: M=32,4

Question 6: 60,2

Question 7: 494

Question 8: m=9

Question 9: 4 zeros

Question 10: n=5

7 tháng 6 2016

WHAT TIME

HOW TALL

HOW FAR

WHAT WEIGHT

HOW

HOW LONG

HOW MUCH

WHAT

HOW MUCH

HOW MANY

HOW OFTEN

HOW

HOW

WHY

12 tháng 3 2016

Đâu là Online Math ko phải Online English đâu nha!