Ratios and proportions
J.1Understanding ratiosJ.2Equivalent ratiosJ.3Equivalent ratios: word problemsJ.4Compare ratios: word problemsJ.5Unit ratesJ.6Do the ratios form a proportion?J.7Do the ratios form a proportion: word problemsJ.8Solve proportionsJ.9Solve proportions: word problemsJ.10Estimate population size using proportionsJ.11Rate of changeJ.12Constant rate of changeJ.13Scale drawings and scale factors
We use 8 digits 0, 1, 2, 3, 4, 5, 6, 7 to form all 5-digit natural numbers consisting of distinct digits. Find the sum of all numbers that can be formed
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 .
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 .
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
think about your favourite hobby . Fill the word web with your own information. Then write a short paragraph of 100 words about our favourite hobby
Cho hình 52. Hãy so sánh:
a) và
.
b) và
đọc thư, sau đó trả lời các câu hỏi:
hi , peter. i am writing to talk about my school subject . i love math most , this subject is so interesting and hard . Well, i must say i love informatics , too. i want to be an informatics technician as my older brother . he is writing
many game progams and studying progams for teenagers . he is so intelligent . oh , i forget to tell you one of my secrets . i spend most of my free time on drawing , so i enjoy art subject at my school , too . my art teacher is quite strict but fun. do you tink that an informatics technician can be a painter ? if yes , i will be both . what about you ? write me about your favorite school subject .
love ,
viet
1. who did write this letter ?
2. which job does viet want to work in the future ?
3. which word in the letter is the synonym of the word clever ?
4. is his art teacher strict or tall ?
5. what does viet 's older brother do ?
5. what is the letter about ?
Cho tam giác ABC có góc A=60 độ .Kẻ tia phân giác BD,CE( E thuộc AB ;D thuộc AC)
BD và CE cắt nhau tại O. Tia phân giác của góc BOC cắt BC tại F.
Chứng minh rằng
a) OD=OE=OF
b)tam giác DEF là tam giác đều
Cho tam giác ABC có góc A=60 độ .Kẻ tia phân giác BD,CE( E thuộc AB ;D thuộc AC)
BD và CE cắt nhau tại O. Tia phân giác của góc BOC cắt BC tại F.
Chứng minh rằng
a) OD=OE=OF
b)tam giác DEF là tam giác đều
