Giải thích các bước giải:
Bài 3:
a) `2x^3 + 5x^3 - 4x^3 = 3x^3`
b) `2x^2 + 3x^2 - 1/2 x^2 = 9/2 x^2`
c) `-6xy^2 - 6xy^2 = -12xy^2`
a) $2x^3+5x^3-4x^3$
$=x^3.(2+5-4)$
$=x^3.3=3x^3$
b) $2x^2+3x^2-\dfrac{1}{2}x^2$
$=(2+3-\dfrac{1}{2})x^2$
$=\dfrac{9}{2}x^2$
c) $-6xy^2-6xy^2$
$=(-6-6)xy^2$
$=-12xy^2$
Giải các bất phương trình sau A. (3-x) (2x-3) nhỏ hơn 0 B.2x bình phương -x -6 lớn hơn 0 Giúp e với ạ
U at the top of longevity. 4. Japanese people don't eat much red meat, but they eat a lot of fish and vegetables. 5. We only eat more fish and vegetables to be healthy. IV.Read the passage and choose the correct answers (A, B, C or D) to fill in the blanks. Keeping taba on your calorie intake is a great way to stay healthy and (1) in shape. Calorie is a measurement of energy we get from eating food and it's also a measurement of energy we use to do and activity, The number of calories you need daily (2) depending on your age, gender, weight, height and lifestyle. There are various tools online which you can use to determine your recommended calorie intake, Remember to take note (3) what you eat and drink (4) you can adjust your diet. It's also important to exercise regularly as it helps (5) extra calories. Besides having a balanced diet, it's advised that you should eat more small meals instead of three big ones a day. C. to have been C. varies C. of D. be D. will vary B. being 1. A. to be 2. A. is varying B. varied D. to B. at B. as 3. A. for 4. A. so C. use D. run B. burn 5. A. take Your friend Tam feels tired all the time. Read some advice from his doctor. Complete with 1. MORE or LESS. E.WRITING 1. Drink more water.
Cho 2 giống chó lông ngắn thuần chủng và lông dài thuần chủng giao phối với nhau đc f1 toàn chó lông ngắn khi cho các con chó f1 giao phối vs nhau thì tỉ lệ kiểu hình ở f2 như thế nào. Yêu cầu vẽ sơ đồ
thực hiện yêu cầu đề bài như trong hình Bài 14 và 15.
Bài 1: Viết các số sau dưới dạng lũy thừa: d, -27/81 CÁC BN GIÚP MIK VỚI CTLHN LUÔN, VOTE 5 SAO LUÔN
Giải giúp mik bài 11 có vẽ hình nhé bạn nào trả lời chính xác đầy đủ nhất mik vote full
Ai giúp mình bài này với cảm ơn nhé
II. Read the text and match the questions with the answers. o exercise hould eat WHAT SHOULD MY DAILY INTAKE OF CALORIES BE? A person should have a healthy diet. A man needs around 2.500 kcal a day, but the intake of calories for a woman is lower, about 2,000 kcal a day. These pumbers can be different according to age and lever of physical activities. 1. A. 2. A. 3. А 4. A To have a healthy weight, the number of calories you eat should be equal to the number of calories you burn through physical activities. You need to use more energy than you consume, so you can lose weight in a healthy way. This is how to do: + Eat a healthy, balanced diet with fewer calories. +Do more physical activities. I. 1. To gain weight, you need to eat more calories than your body uses every day. 3 1. Should a person's diet be healthy? a. 2,000 kcal a day. 2. How many calories does a man need a day? b. No, it isn't. 3. What is the intake of calories for a woman? c. Physical activities. 4. Is the daily intake of calories the same for everyone? d. 2,500 kcal. 5. What helps you burn your calories? e. No, they don't. f. You need to eat more calories than your body uses every day. 6. Do more physical activities help you gain weight? 7. What do you need to do to gain weight? g. Yes, it is.
Ai giúp em giải mấy câu tiếng anh này vs ạ
Ở cà chua gen A quy định thân cao trội hoàn toàn so với a quy định thân thấp gen B quy định quả đỏ tròn trội hoàn toàn so với gen b quy định quả bầu dục .Hai cặp gen này nằm trên 1 cặp NST tương đồng CHo lai cà chua thân cao quả tròn thuần chủng với cà chua thân thấp bầu dục .XÁc định kết quả Kiểu gen kiểu hình ở F2
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