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21 tháng 7 2017

The number of A's is:
(99-3): 2 + 1 = 49 (term)
=> A = (99 + 3) * 49: 2 = 2499
Dress......

21 tháng 7 2017

A = 2499

28 tháng 12 2016

mình ko hiểu tại sao ko ai chịu giúp bạn cả,nhưng mình sẽ giúp bạn nhưng bạn phải

bài này dễ tính lắm,đáp án là 51

20 tháng 1 2017

Viết sai chữ " máy tính " rồi kìa, phải là calculator chứ không phải calculate . 

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...
Đọc tiếp

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
9 tháng 12 2016

1/10+2/10+3/10+4/10+5/10+6/10+7/10+8/10+9/10+55/10

=1+2+3+4+5+6+7+8+9+55 /10

=100/10

=10

9 tháng 12 2016

Công lại :

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 55 / 10 

= 100 / 10

= 10

27 tháng 2 2016

Câu 1: 40810

Câu 2: 24

Câu 5: 20

Câu 6:5036

Câu 7:6

31 tháng 10 2021

\(\overline{abc}-\left(a+b+c\right)=100a+10b+c-a-b-c=99a+9b=9\left(11a+b\right)⋮9\)

The number of ways is : \(\frac{9\cdot8\cdot7\cdot6\cdot5}{120}=126\) ( ways )

Ans:126 ways 

16 tháng 10 2021

D