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Without changing the value of the fraction, the coefficients in the numerator denominator of the fraction x + (Y / 3) / (1 / 4) x-2y are changed into integers fast
x - 2 y + (4 x y)/3
Do not change the value of the fraction, so that the coefficients in the numerator and denominator of the fraction are integers x + 1 / 3Y / 2 / 5x-1 / 2Y!
Do not change the value of the fraction, so that the coefficients in the numerator and denominator of the fraction are integers x + 1 / 3Y / 2 / 5x-1 / 2Y!
x+1/3y/2/5x-1/2y
= (x+y/3)/(2x/5-y/2)
=30(x+y/3)/30(2x/5-y/2)
=(30x+10y)/(12x-15y)
The length of a pair of corresponding sides of two similar triangles is 35cm and 14cm respectively, and the difference between their girths is 60cm
∵ the ratio of the corresponding sides of a triangle is 35:14 = 5:2, and the ratio of the perimeter is equal to the similarity ratio. If the perimeter of a triangle is 5x, the perimeter of the other triangle is 2x, and the difference of the perimeter is 60cm, we get 5x-2x = 60, and the solution is: x = 20, ∵ the perimeter of the two triangles are 100cm and 40cm respectively
The greatest common factor of a number and 60 is 12, and the least common multiple is 120______ ．
120 × 12 / 60 = 1440 / 60 = 24 A: the number is 24, so the answer is: 24
If the variable is correctly defined, when the statement scanf (% d% d% d ", & K1, & K2, & K3) is executed____ Is the correct input
A、2030,40 B、20 30 40 C、20,30 40 D、20,30,40
B、20 30 40
Words in unit 1 of English Preparation
I'd like to make a comprehensive one. From good to people's names, I'd like to thank you for your trouble. Now I only have 87 points and 80 points. I'll go to earn more money
I'm also on the first day of junior high school. 1 good 2 morning 3 good morning 4 hi 5 Hello 6 I 7 am 8 I am 9 are 10 you 11 yes 12 nice 13 to 14 meet 15 too 16 welcome 17 China 18 thanks 19 miss 20 see 21 let 22 US 23 let's = let u
As shown in the figure, the vertex of the parabola y = - x2 + 2x + 3 is C, intersecting the X axis at two points a and B, and intersecting the Y axis at point D
(1) Finding the coordinates of a, C and D
(2) Finding the area of △ ACD
(3) Try to explore whether there is a point e except point C on the parabola y = - x2 + 2x + 3, so that the area of triangle ACD and triangle ACD is equal? Write out the coordinates of point E
The process of seeking the third question
See picture
If there are 2007 consecutive natural numbers, and one of them is a, what is the sum of these 2007 numbers
If the middle is a, then the average is a
The sum of 2007 is 2007a
The following polar coordinate equation is transformed into rectangular coordinate equation (1) ρ sin θ = 2 (2) ρ (2cos θ + 5sin θ) - 4 = 0 (3) ρ = - 10cos θ (4) ρ = 2cos θ - 4sin θ
621²-769×474-148²
621²-769×474-148²=621²-148²-769×474=(621+148)*(621-148)-769*474
=769*473-769*474=769*(473-474)=-769
RELATED INFORMATIONS
- 1. Without changing the value of the fraction 2x-5 / 2Y / 2 / 3x + y, the fraction after the coefficients in the fraction are changed into integers is___________
- 2. 0.3x + 0.2y/0.4x-0.1y does not change the value of the fraction, and the coefficients of the numerator and denominator in the fraction are changed into integers
- 3. If the absolute value of the coefficients in the numerator and denominator is the smallest integer, then the numerator and denominator of the fraction (0.02x + 0.06y) / (0.8x-0.2y) are multiplied by ()
- 4. Without changing the value of the fraction, the coefficients of the numerator and denominator of the following formulae are changed into integers (1) 1.03x + 0.02y/3.2x-0.5y (2) 3x of 4-2y of 3 / 1X of 3 + 5Y of 2
- 5. If X-Y = 3xy = 10, then the square of X + the square of y =?
- 6. 1 / 2, 3 / 4, 5 / 8
- 7. General score: (1) 1 / A + 1,3 / 1-A, 5 / A ^ 2-1 (2) a / A ^ 2-4, A-1 / A-2, a + 2 / A ^ 2-4a + 4
- 8. What's the difference between 8 and 27?
- 9. First the general score, and then compare the size of the two scores, 3 / 4 and 2 / 3, 8 / 27 and 4 / 9
- 10. First divide, then compare the size 1.5/9 and 7 / 10 2.7/8 and 9 / 10
- 11. It is known that the hypotenuse of a right triangle is 4.5 meters and a right side is 2 meters. What is the angle between them
- 12. Given the equation x2 + y2 = 25 of a circle, a straight line Ma, MB passing through M (- 4,3) intersects the circle at points a and B, and Ma, MB are symmetric with respect to the straight line y = 3, then the slope of the straight line AB is equal to () A. −43B. −34C. −54D. −45
- 13. On the linear equation of one variable with absolute value Solve the following equation: 1.|x-|3x+1||=4 2.|x+3|-|x-1|=x+1 3.|x-1|+|x-5|=4 1. Discuss the number of solutions of the equation | 2x-2 | + | 2x-5 | = a about X 2. Given that the equation | x | = ax + 1 has a negative root but no positive root, find the value range of A
- 14. The points P (a, - 2), q (2, b), PQ are parallel to the x-axis. Find the values of a and B
- 15. How to solve the equation x / 4-0.6 = x / 8 + 0.1 Today, urgent, step by step
- 16. The perimeter of a square and a circle are equal, and the area of the circle must be larger than that of the square______ (judge right or wrong)
- 17. How to prove that the image is infinitely close to the x-axis? X ≥ 0, a ≠ 0 (originally a physics problem in Senior Two) because the teacher didn't understand what I said, it was transformed into a mathematical model
- 18. When a letter is multiplied by a number and the multiplication sign is omitted, () is usually written before ()
- 19. What is the derivative of F (x) = 1 / xlnx f(X)=1/(xlnx)
- 20. English translation Yao Ming has more than just size:he also has great skill and speed and he is a team player.Yao Ming is the son of two great basketball players and learnt how to play one of the world's most popular games when he was young.Now ,as one of the stars in the NBA, Yao Ming is working hard to live his dream and show the world that Chinese basketball players love this game too!