The usage and difference of a great deal of and G large number of?

The usage and difference of a great deal of and G large number of?

It should be a large number of. A great deal of plus uncountable nouns, a large number of plus plural of countable nouns, and then there are some other words, many plus uncountable nouns, lots of
A large number of and a great deal of have the same meaning but different usages. A large number of can only be followed by the plural of countable nouns, while a great deal of can only be followed by uncountable nouns.
It is known that the numbers corresponding to two points a and B on the number axis are - 1 and 3 respectively, and point P is a moving point on the number axis, and its corresponding number is X. (2) whether there is a point P on the number axis, so that point P to
The sum of the distances between point a and point B is 6? If it exists, request the value of X. if it does not exist, explain the reason
3-（-1）=4
（6-4）/2=1
-1-1=-2
3+1=4
That is - 2,4
It is known that the numbers corresponding to two points a and B on the number axis are - 1 and 3 respectively. Point P is a moving point on the number axis, and its corresponding number is X
(1) If the distances from point P to point a and point B are equal, find the corresponding number of point P
(2) Is there a point P on the number axis, so that the sum of the distances from point P to point a and point B is 6? If there is, the value of X is requested; if not, please explain the reason
(3) When point P moves to the left from point o at the speed of 6 units per minute, point a moves to the right at the speed of 2 units per minute, and point B moves to the right at the speed of 1 unit per minute, when meeting point a, point P immediately moves to the right at the same speed, and constantly goes back and forth between points a and B. when point a and B coincide, what is the distance that point P passes
(1) PA = Pb, let the corresponding number of p be x, then
PA=X+1 PB=3-X
X + 1 = 3-x gets x = 1
So p corresponds to 1
(2) P is set to X on the right side of B
PA=X+1 PB=X-3
PA + Pb = 2x-2 = 6 leads to x = 4
P is on the left of A
PA=-1-X PB=3-X
PA + Pb = - 2x + 2 = 6 leads to x = - 2
So this p has two corresponding numbers - 2,4
(3) The description of the problem is not clear
It is known that the numbers corresponding to two points a and B on the number axis are - 1 and 3 respectively. Point P is a moving point on the number axis, and its corresponding number is X
It is known that the corresponding numbers of two points a and B on the number axis are - 1 and 3 respectively, and the corresponding number of point P is X
(3) Now point a and point B move to the right at the speed of 2 unit length / s and 0.5 unit length / s respectively, and point P moves to the left at the speed of 6 unit length / s from point O. when the distance between point a and point B is 3 unit length, what is the corresponding number of point P?
　
(3) After T seconds, a corresponds to - 1 + 2T, B corresponds to 3 + 0.5T, P corresponds to - 6T,
AB=|-1+2t-(3+0.5t)|=|1.5t-4|=3,
5 T-4 = soil 3,
∴t1=14/3,t2=2/3,
The number corresponding to point P = - 28 or - 4
a. The position of B. C three numbers on the number axis is as shown in the figure, simplifying | B + C | + | B + a | - | c-a|
—|——|——|—————|————
c b 0 a
A:
b+c﹤0 b+a＞0 c-a＜0
|b+c|+|b+a|-|c-a|
=-(b+c)+(b+a)+(c-a)
=0
No, you can continue to ask until you are satisfied
Are you bored? You can't do your homework and you don't have to play like this!
a. The positions of B and C on the number axis are shown in Figure 1. Compare the following logarithms
How the number axis looks (a little rough)__ a___ b_____ 0_____ c_________
-a__ 0 -a__ a -a__ -b -a__ C
It can be seen from the number axis that a < 0
Then - a > 0;
-a＞0,a＜0
Then - a > A;
It can be seen from the number axis that a < B < 0
Then the following terms are: A-B < 0, moving a to the right: - B < - A
∴-a＞-b；
It can be seen from the number axis that the absolute value of a is greater than C
Because a < 0, the absolute value of a is - A
∴-a＞c
The positions of the corresponding points of rational numbers a, B and C on the number axis are shown in figure 2-3-1. Please compare the numbers of the following groups. (1)
-a,-|c|,-b,0,a；
（2）0,|a|,-b,-c,c
Please insert the picture
Can we say "rational numbers correspond to the points on the number axis one by one"?
Questions in the lower left corner of page 16 in the second semester of grade two of East China Normal University Edition
No. There are countless points on the number axis, that is, there are rational numbers and irrational numbers, so they can't correspond one by one
No, for example, the root 2 on the number axis is not a rational number. But real numbers correspond to the points on the number axis one by one.
It can only be said that rational numbers correspond to rational points on the number axis one by one
Because some of the points on the number axis can not be expressed by rational numbers, so "rational numbers and points on the number axis one-to-one correspondence" is obviously wrong, which is one of the reasons why irrational numbers are introduced
If "rational number corresponds to the point on the number axis one by one" is right, then it is equivalent. The following two propositions are correct:
1. Any rational number has a unique point on the number axis
2. Any point on the number axis is a unique rational number
Obviously, the second one is wrong, because there are irrational numbers on the number axis.
So the hypothesis is not true!!
The points on the number axis are all real numbers, and real numbers include rational numbers and irrational numbers
All rational numbers can be represented by points on the number axis. Conversely, all rational numbers on the number axis represent rational numbers
No, there are irrational numbers on the number axis
The relationship between rational numbers and the points on the number axis: every rational number can be represented by the points on the number axis
Every rational number can be represented by a unique point on the number axis, which is the one-to-one correspondence between the rational number and the point on the number axis
The only point
Rational point representation