In first box, because there is 9 keys mixed up so the maximum of times we try to open the first box is 9 attempts
In second box, because there is 8 keys remaining mixed up so the maximum of times we try to open the second box is 8 attempts
.......
So on the last box will have 1 attempt
The maximum attempts to open 9 boxes is: 9 + 8 + ... + 1 = 45 attempts
Jane draws a circle and a triangle on each page of her booklet, and near each drawing she writes the number of common points of the circle and the triangle.
How many different numbers can she write
24 4- digit number can be formed by using 1,3,5 and 7, with each digit being used exactly one each time. Find the average of these 24 numbers?
find the number of integer between 1 and 2000 with the property that the sum of digits equals 9
Pat has a number of counters to place into the cells of a 3 x 3 grid. She may place any number of counters in each cell or leave some of the cells empty. She then finds the number of counters in each row and each column. Pat is trying to place counters in such a way that these six totals are all different.
What is the smallest total number of counters that Pat can use?
Use the correct form of the worlds:
1. I think staying at home all day is............because i don't know what to do (bore)
2. It is ..........to eat a lot of sweetened food and drink ( health)
3. I love ............ pottery because it is challeging ( make)
4. Many people do volunteer work because it can make a ........ in their community (differ)
5. Some students usually teach street ............English in the summer(child)
6. You should do morning exerices ............(regular)
7. We saw many ..........types of fish in the aquarium yesterday. ( differ)
8. What's the matter with your sister?- She has a ........(head)
9. Remember to brush your...............after meals.(tooth)
10. Hue is ......for its scenic spots (fame)
11. California is the ....largets state in the USA (three)
12. My uncle likes sailing and enjoys a ...........outdoor life(health)
HELP ME!
Chia động từ trong ngoặc đúng dạng thì quá khứ đơn:
Snow White was the daughter of a beautiful queen, who died when the girl (be) (1)……….. young. Her father (get married) (2) ………….again, but the girl’s stepmother was very jealous of her because she was so beautiful. The evil queen (order) (3)………….a hunter to kill Snow White but he couldn’t do it because she was so lovely. He (chase) (4) ………….her away instead, and she (take) (5) ………….refuge with seven dwarfs in their house in the forest. She (live) (6) ………….with the dwarfs and took care of them and they (love) (7) ………….her dearly. Then, one day the talking mirror (tell) (8) ………….the evil queen that Snow White was still alive. She (change) (9) ………….herself into a witch and (make) (10) ………….a poisoned apple. She (go) (11) ………….to the dwarfs’ house disguised as an old woman and tempted Snow White to eat the poisoned apple, which (put) (12)………….her into an everlasting sleep. Finally, a prince (find) (13) ………….her in the glass coffin where the dwarfs had put her and woke her up with a kiss. Snow White and the prince (be) (14) ………….married and lived happily ever after.
Help me!!!
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:
Given .
Calculate: .
Question 2:
Given two triangles and .
If and then .
Question 3:
Suppose that is directly proportional to with the scaling factor is .
If and then k=.
Question 4:
In this figure, find the value of ?
Answer: .
(write your answer by decimal in simplest form)
Question 5:
Find the value of ?
Answer: .
(write your answer by decimal in simplest form)
Question 6:
Given two triangles and .
If and then the perimeter of is .
Question 7:
In this figure, .
Question 8:
The value of .
(write your answer by decimal in simplest form)
Question 9:
The perimeter of a triangle is and the sides of its are in a ratio of .
Then the sides's length of the triangle are .
(write your answer from least to greatest and used ";")
Question 10:
Fill the suitable number in the "?".
Answer: .
giúp mik vs nha please
When a particular six-digit number is multiplied by 2, 3, 4, 5 and 6 respectively, each of the
products is still a six-digit number with the same digits as the original number but in a different
order. Find the original number.
Chuyển sang câu bị động :
1) He is running his own restaurant ?
2) The secretary opens the mails every morning
3) The teacher doesn't allow me to take the seat by the window
4) Tom's absence worried his mother
5) They are building a new school in this town
6) You should finish the report right now
7) Are you going to post this letter ?
8) He has pay the bills before the fifth of the month
9) No one has opened that box for the past hundred years
10) The enemy used to it take the bag
11) The fire has destroyed many houses
12) The children are carrying the chairs in to the house
