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Anonymous users2024-02-11The classification of rational numbers can generally be divided into two cases, rational numbers { (two) 2Rational number {(three)
The following statement is correct ().
a All integers are positive b Positive and negative numbers are collectively referred to as rational numbers.
c fraction must be a rational number d integer, also known as a natural number c
The following statements are correct ().
0 is an integer and is also a natural number; 2.is a negative score of 3Natural numbers must be positive; 4 is not a fraction, it is a decimal.
5.A negative fraction must be a negative rational number.
a.One by one
The following statements: (1) that is, negative numbers, decimals, and rational numbers; (2)-35 is a negative number, which is also an integer, but not a natural number; (3) 0 is a non-negative number and a non-positive integer, where the correct statement is ().
Each d3 d
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Anonymous users2024-02-10Three; b ;
Correct: c Correct; c
Positive rational numbers: 5; 109 +2 3 3 and 3 4 negative rational numbers: -40 -7
Integer; 5 -40 109 -7 0
Score: -3 20 +2 3 3 and 3 4
30 points means 11:30 a.m. -15 points means 12:15 p.m. Early arrival at 45 a.m.
The positive integer is 20 67 +7
A negative integer is -3
The score is one and two-thirds.
The non-negative number is 0 20 one and two-thirds 67 15 100 +7
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Anonymous users2024-02-09Length and height: save 60*20*2 2400
2) Length and width: save 60*45*2 5400
3) Height and width: save 45*20*2 1800
Therefore, the combination of length and width is the most economical, both front and back.
2 2-wheeled motorcycles, 3-wheeled tricycles, 4-wheeled cars.
Equipped with X motorcycle, Y tricycle, Z car De:
2x+3y+4z=15;x+y+z=6
Therefore x=3+z
y=3-2z
Since xyz is.
Positive integer. So x=4
y=1z=1
3.Same as above.
There are 200 people in total.
Others are calculated sequentially.
Question: 1) xx
How many people. 2) How many more (less) people are xx than xx.
3) How many people participate in two (three. Four. Item.
They are the two (three) respectively. Four. Item.
5.Because the two baskets weigh 49
So a basket. The meaning is not clear.
Divide the bright species. 1) A basket (not counting the imitation basket) is heavy.
then two-thirds of the basket (not counting the basket) weighs.
So the basket weighs 17-49 3
2) One basket (counting basket) weighs.
then one-third of an apple weighs.
Therefore, the total apple is heavy.
So the basket is heavy.
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That's all over, this should be good.
If there's anything you don't understand, just ask me. >>>More
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