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If the distance between the corresponding point of a number on the number axis and its opposite number on the number axis is 5 unit length, then the number is______ Or______ ．
Let this number be a, then its opposite number is - A. according to the meaning of the question, we get | a - (- a) | = 5, so 2A = ± 5, and the solution is a = ± 52. So the answer is: 52, - 52
Starting from a point on the number axis, a point moves 4 units to the right and 2 units to the left. If the number represented by the end point is 0, what is the number represented by the start point
How to calculate
According to the rule of number axis, right is + left is - A + 4-2 = 0
So a = - 2, that is, the number represented by the starting point is - 2
On the number axis, 3 moves 12 unit lengths to the left and 8 unit lengths to the right. How many unit lengths does this number need to move to the right to return to the origin?
Is the origin here 3 or 0?
3-12 + 8 = - 1 answer: move one unit to the right
If the number corresponding to the point m on the number axis is negative 3, then move the point m to the right four unit lengths, and the number represented by the point m is negative 3
A. Negative 7 B.1
C. Negative 7 or 1 D. is not true
Please don't just say the answer, talk about how to do this problem, don't be too complicated, just be simple
Please answer quickly
Choose B, draw a number axis, - 3 move right 4 units, of course, is 1!
A point starts from the point representing - 2 on the number axis, moves 4 unit lengths to the right, and then moves 5 unit lengths to the left, indicating the number represented by this point
From the meaning of the title: moving 4 units to the right can be expressed as + 4, and then moving 5 units to the left can be expressed as - 5, so the point is: - 2 + 4-5 = - 3
On the number axis, move the point representing 3 5 units in the negative direction along the number axis, then the number corresponding to this position is______ ．
According to the meaning of the question, make the number axis as shown in the figure: the number corresponding to this position is 3-5 = - 2, so the answer is - 2
On the number axis, a stands for 2. Starting from point a, move three unit lengths along the number axis to point B, then B stands for 5. Is that right?
It can also be - 1. If it is changed to "move three unit lengths along the number axis to point B", then B means 5
The corresponding point of a rational number on the number axis is a. move point a three unit length to the left and then two unit length to the left,
Get point B, the number corresponding to point B is equal to the absolute value of point a, find the number corresponding to point a to point B, the number corresponding to point B is equal to the absolute value of point a, find the number corresponding to point a, the number corresponding to point B is equal to the absolute value of point a, find the number corresponding to point a
Find the number corresponding to point a. the number corresponding to point B is equal to the absolute value of point a,
Negative 5 / 2
The corresponding point of a rational number on the number axis is a. move point a three unit lengths to the left, and then move two unit lengths to the left to get point B. the number corresponding to point B is equal to the absolute value of the number corresponding to point A. what is the corresponding number of point a? Please use the number axis to solve
The length of a and B is 2.5 units
The corresponding point of a rational number on the number axis is a. move point a three unit length to the left and then two unit length to the left to get point B. the absolute value of the number corresponding to point B is equal to that of point A. what is the corresponding number of point a?
Let the number corresponding to point a be x, then the number corresponding to point B x-3-2 = X-5, and the absolute value of the number corresponding to point B and the number corresponding to point a are equal, | x | = | X-5 |, the solution is: x = 2.5
RELATED INFORMATIONS
- 1. If point a represents 7, and now a moves 6 unit lengths along the number axis to point B, then the rational number represented by point B is
- 2. As we all know, the meaning of | 4 | = | 4-0 |, on the number axis, is the distance between the point of 4 and the origin (that is, the origin of 0). For another example, the meaning of formula | 8-3 |, on the number axis, is the distance between the point of 8 and the point of 3. Similarly, the meaning of formula | a + 5 | on the number axis is________ . If the answer is "the distance between a point and 5 or - 5", please explain the reason in detail!
- 3. Points a and B are the corresponding points of numbers - 3 and - 12 on the number axis respectively. If line AB moves to the right along the number axis to a ′ B ′ and the number corresponding to the midpoint of line a ′ B ′ is 3, then the number corresponding to point a ′ is______ The distance that point a moves is______ ．
- 4. As shown in the figure, it is known that the number represented by point a on the number axis is 6, B is a point on the number axis, and ab = 10. Starting from point a, the moving point P moves uniformly to the left along the number axis at the speed of 6 unit lengths per second, and the movement time is t (T > 0) seconds (1) (1) write the number represented by point B on the number axis______ The number represented by point P______ (expressed by an algebraic expression containing T); ② m is the midpoint of AP and N is the midpoint of Pb. Does the length of segment Mn change during the movement of point P? If it changes, please explain the reason; if it doesn't change, please draw a graph and find out the length of line Mn; (2) moving point Q starts from point a and moves left uniformly along the number axis at the speed of 1 unit length per second; moving point R starts from point B and moves left uniformly along the number axis at the speed of 43 unit length per second; if P, Q and R start at the same time, when point P meets point R, it immediately returns to point Q Then, what is the unit length of the journey from the start to the stop of point P?
- 5. Given that points a and B are on both sides of the origin on the number axis, their corresponding numbers are - 4,3x-5 / 2x + 2, and the distances from points a and B to the origin are equal, find the value of X
- 6. The three elements of the number axis are______ 、______ 、______ ．
- 7. The position of ABC three numbers on the number axis is shown in figure 2.3-2. The number axis c0ab is simplified as | a | / A + | B | / B + | / C | / C!
- 8. The position of rational number ABC on the number axis is shown in the figure, then the size relationship of a, negative a, B, negative B, C, negative C, 0 is?
- 9. All real numbers can be represented by points on the number axis. Conversely, all points on the number axis represent real numbers
- 10. If the latter noun is plural, does the predicate still use the singular
- 11. If f (x) = 2x + 5, then f (2x)= f(X+3)= f(2x+1)= f（-x）= F (x + 1) f（x-4）=
- 12. F (x) = / 2x-1 / - / 2x + 1 /, judge the parity function
- 13. The expression form of high school function
- 14. Function en, minimum positive period What is the minimum positive period of y = 2Sin μ x
- 15. On the properties of function periodicity If one of the following conditions holds for any X in the field of F (x), then f (x) is a periodic function, and the period T = 2A (a is not equal to 0) & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; f(x+a)=f(x)+1\f(x)-1 f(x+a)=1-f(x)\1+f(x) f(x+a)=f(x-a) How can I prove this
- 16. Given the sequence {a (n)}, a (1) = 1, a (2) = 2, a (n) = a (n-1) - A (n-2), (n ∈ n + and N ≥ 3), then s (100)=
- 17. Mathematical function problem? 1. A factory produces one kind of parts, and the daily income is 28 yuan when the quota is fulfilled. If one part is overproduced and the income is increased by 1.5 yuan, then the functional relationship between a worker's daily income y yuan and the number of overproduced parts x is () 2. A factory has 800 tons of coal and burns 5 tons of coal every day. Find out the functional relationship between Y tons of surplus coal and X days of burning coal, and point out whether y is a linear function of X 3. Under normal circumstances, the maximum number of heart beats per minute (s / min) a person can bear during exercise is a function of the person's age of N years (1) According to the following information, the function of s with respect to n is obtained under normal conditions. According to the surface of scientific research in medicine, the heart rate of people during exercise is usually related to their age. Under normal conditions, the maximum heart rate that people aged 15 and 45 can bear during exercise is 164 beats / min and 144 beats / min respectively (2) If a 63 year old man is running and the doctor measures 26 beats in 10 seconds on the way, ask: is he in danger? Why? 4. It is known that y + m is in direct proportion to x-m (where m and N are constants). If x = - 1, y = - 15; X = 7, y = 1, find the relationship between Y and X 5. In the activity of Yunnan green hope project, the action of protecting mother river, a kind of telephone card was issued. The purpose is to build ten thousand mu of young people's new century forest at the beginning of the new century. The face value of this kind of telephone card is 12 yuan, of which 10 yuan is the call fee, 2 yuan is donated to Yunnan green hope project fund, and 1 yuan is attached to the call fee, Yunnan green hope project fund is the function y (1) Write the function relation between Y and X, and find the value range of the independent variable x (2) It is known that the cost of planting trees per mu is 400 yuan. If there are 46000 junior high school graduates in our city this year, and each person buys a card, how many mu of trees can the fund plant?
- 18. Ask a few mathematical function questions Y = the range of the root sign (xsquare - x + 2) The minimum value of y = x square + 2x + 2 The maximum value of y = 2 - | x |
- 19. It is known that f (x) = 2cos ^ 2x + 2 √ 3xinxcosx + a (x ∈ R) a is a constant (1) Finding the minimum positive period of F (x) (2) Finding monotone increasing interval of F (x) (3) If the sum of the maximum and minimum of F (x) is 3, find the value of A
- 20. If y = sinwx (W > 0) has two maximum values in [0.1], the period of function is calculated