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Anonymous users2024-02-06(1-x)*(y+1)=y-x-xy+1=1 so y-x-xy=0, so y-x=xy, so (y-x) xy=1, i.e., minus x=1, so the negative primary of y minus the negative primary square of x is equal to minus 1
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Anonymous users2024-02-05Solution: Let the number of tens be x and the number of single digits be y, so the ratio of the new number to the old number is: 4:7 if the ratio of the new number is 4:7, then: (10y+x) (10x+y)=4:7, simplified: 2y=x
Simultaneous 2 equations, solved: x=8, y=4
The original 2 digits are: 84
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Anonymous users2024-02-04Let the ten digits be x and the single digit be y
x+y=12
10x+y):(10y+x)=7:4
x=8,y=4
The original number was 84
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Anonymous users2024-02-03The area of each overlapping part is a quarter of the area of a square. The overlapping part formed by the overlap of n squares has an area of (n-1), so the total area is a quarter of a double (n-1).
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Anonymous users2024-02-02According to the congruent triangle, it can be seen that the shadow area of each part is actually a quarter, so the total area is n 4
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Anonymous users2024-02-01Place n squares with a side length of 1cm as shown in the figure, dots a1, a2....An is the center of the square, then the overlapping area formed by the overlapping of n squares is [n 4].
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Anonymous users2024-01-31You still have to take the high school entrance examination, so it's best not to bet on the questions for the future!! This can still be used when the third year of junior high school is about to take the high school entrance examination!
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Anonymous users2024-01-30Don't hold the mentality of betting on the topic, it will have a certain psychological impact!
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Anonymous users2024-01-2912 times the root number 3, approx.
Without letters, the process is inexplicable.
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Anonymous users2024-01-28Integer: A monomial or polynomial that contains letters.
For example, 2x is an integer, and 4y+2x is formal.
Fraction: The denominator is a mononomial or polynomial of letters.
For example, 5 x is a fraction, and 3a 4b+c is also a fraction.
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Anonymous users2024-01-27Integer: A monomial or polynomial that contains letters.
Fraction: The denominator is a mononomial or polynomial of letters.
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Anonymous users2024-01-26Fraction: The letter exponent is the denominator.
Integer: An algebraic formula that contains letters.
1 a2 b
3 d looks like it should be of >>>More
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