Xiaoming, Xiaogang and Xiaohong cut a total of 360 kg of grass. Xiaoming cut half of the other two and Xiaogang cut one third of the other two Xiao Ming, Xiao Gang and Xiao Hong cut a total of 360 kg of grass. Xiao Ming cut half of the other two, and Xiao Gang cut one third of the other two. How much grass did each of the three cut? What we want today! It's a formula

x y 360-x-y
x=1/2(y+360-x-y)
y=1/3(x+360-x-y)
x=120
y=90
360-x-y=150

Xiaoming has 48 pens, Xiaogang has 36 pens, Xiaoming gives Xiaogang 8 pens, Xiaogang gives Xiaoming 4 pens. After how many times, Xiaogang's pen is twice as big as Xiaoming's pen (Set x)

(48-4x)*2=36+4x
x=5

The least common multiple of two natural numbers a and B is 60______ There are two possible values

If we do not consider the order of a and B, there should be 23 cases. (1,60), (2,60), (3,20), (3,60), (4,15), (4,30), (4,60), (5,12), (5,60), (6,20), (6,60), (10,12), (10,60), (12,15), (12

Factorization a ^ 4-5a ^ 3 + 6A ^ 2-5A + 4

Let a ^ 4-5a ^ 3 + 6A ^ 2-5A + 4
=（a^2+ma+2)(a^2+na+2)
=a^4+(m+n)a^3+(mn+4)a^2+2(m+n)a+4
There are
m+n=-5
mn+4=6
2（m+n)=-5
m. N has no solution
This problem cannot be factorized

There are 320 kg of oranges, apples and pears in the fruit shop. The ratio of the total weight of oranges and apples to the weight of pears is 11:5. If the weight of oranges is 56 times that of apples, then the weight of apples is 100%______ Kilogram

320 × 1111 + 5 (1 + 56), = 320 × 1116 × 611, = 120 (kg)

100 plus half of it to get a number, plus a third of the number to get a number. Plus a quarter of the number to get a number And so on, add it all the way up to one hundredth of the last result, then what's the final result? There should be formula, process and answer, and analysis, please. Thank you!

100(1+1/2)(1+1/3)(1+1/4)...(1+1/100)
=100*3/2*4/3*5/4...*101/100
=100*101/2
=101*50
=5050

How many meters per second is 1000 meters per hour

Main building: 1km = 1000m, one hour = 60 * 60 = 3600 seconds
So = 1000 / 3600 = 10 / 36 = 5 / 18 meters per second

The fruit shop brought 40 baskets of fruit, of which 58 were apples. How many baskets are there?

40 × 58 = 25 (baskets) answer: there are 25 baskets of apples

Half plus () equals two-thirds plus () equals three-quarters plus ()
this night

1...
All three are one

Given the vector a = (3, - 4), turn a 45 degrees counterclockwise around the origin to get the coordinates of the vector E

If a rotates 90 degrees counter clockwise is (4,3), with (3, - 4), (4,3), the fourth vertex of a parallelogram (square) whose origin is three vertices is (7, - 1), and the length of vector b = (7, - 1) is twice the root of vector E, then E = (7 / root 2, - 1 / root 2)