Viết biểu thức đại số để tính toán:
a / Khối lượng của một vật có khối lượng V và khối lượng riêng d.
b / diện tích của một hình bình hành với một sàn gạch và đường cao h.
diện tích c / hình thang là đáy nhỏ, đáy lớn là b và h đường cao tốc.
The worker uses 12 cubic blocks to build a 2-step flight of stair as the figure below. To
prevent it from getting damaged, he covers all the surfaces of the stair with square
hard tiles of side length 15cm, except for the bottom. Find the total area of the hard
tiles needed for this stair in m2
Everyone suffers from the common cold at some time or other . It' isn't a serious illness but people spend a lot of money on medicine . The medicine can only relieve the symptoms. That is, it can make you cough less , make you feel better, and stop your nose running for a white . So far , there is not cure for common cold and no medicine to prevent it . People also drink a lot of hot water with sugar , lemon juice . It helps provide them with a lot of vitamin C .
1.Is common cold a serios illness ?
.........................................................................................
2.What can the medicine help with the common cold ?
..........................................................................................
3.Why is hot water with sugar and lemon juice useful ?
.........................................................................................
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
three lines dissect a big triangle into four triangles and three quadrilaterals. the sum of the perimeters of the three quadrilateral is 25 cm, the sum of the perimeters of the four triangle is 20 cm. the perimeter of the big triangle is 19 cm. how big is the sum of the lengths of the three dissecting lines?
Hello. My name is Lan Anh. Let me introduce myself and my family. I'm 13 years old this year, a student of high school Hòa Bình. Listening to music and going out with friends are my hobbies. I am living in Dong nai. My family has 5 people: my father, mother, two younger sister and me. My father names Phu, he's 39 years old and he is a worker. My mother names Dung, she's 34 years old, and she's a housewife. My younger sister names Phuong, she is 7 years old and she is a student. Finally, my 2nd younger sister, she's 1 years old. On the fine day and with free time, my family often goes out for camping outdoors, it's very meaningful and fun. I feel very happy to be alive in this family.
I love my family so much. I will try to learn and work well to take care of my family. I hope that my family is always happy and has the best things.
Thank you for listening to my thoughts.
Wishing you a happy day.
CÁC BẠN GIỚI THIỆU GIA ĐÌNH MÌNH CHO MỌI NG PK DC K. TIỆN THỂ KẾT BẠN LUÔN NHOA
For Xoy right angle, point A on Ox ray, ray Oy.lay point B on point E on the beam of rays Ox, point F on the beam of rays Oy puzzle that OE = OB, OF = OA.
a, prove that AB = EF and EF square AB
b, Call M, N wrong turn is the midpoint of AB and EF. Prove that triangle square omn weight
For many people, the holidays are a time of stress, whether it’s caused by the anxiety of making a big meal for friends and family or spending time with grumpy relatives. Most of the time, the stress has no long-lasting effect; but if it becomes frequent and common over time, researchers say it could increase the risk of Alzheimer’s.
fill in each numbered balank with one suitable word
mary is a new english friend of ....... . She is very . to tell me about her new ...... Her lesson begin at nine each morning and .. until half past ten . the n she has a ...... for a quater of an hour . during this time she usualy talks to her friend about many thing such ....... the last class or last night 's movie , .... she has five .......... in the morning and three in the afternoon . marys favorite .... english . the firt tern lasts four month from september to december . mary tries her ............. to become a good student in the class .
