A 24 cm long rectangular sheet iron is cut off from the four corners and welded into a box. The volume of the box is 486 cubic centimeters, and the original width of the sheet iron is calculated

A 24 cm long rectangular sheet iron is cut off from the four corners and welded into a box. The volume of the box is 486 cubic centimeters, and the original width of the sheet iron is calculated

486/3/(24-3*2)=9cm 9+3*2=15cm
The original iron sheet is 15 cm wide

x²/xy-x/y
3x/4x+y - x-2y/4x+y
(1-y/y+x)÷x/y²-x²

Find a mathematician to answer X & # 178 / / xy-x / y = (1-x) / y3x / 4x + Y - x-2y / 4x + y = (3x-x-2y) / (4x + y) (1-y / y + x) △ X / Y & # 178; - X & # 178; = (1-y) * (y + x) (Y-X) / (y + x) * x = (1-y) (Y-X) / x = (y-x-y & # 178; + XY) / X

Why do you want to do this when you are 41 degrees, 36 points, 3 = 39 degrees, 156 points, 3 = 13 degrees, 52 points

No, you can do it in the following way
41 degrees 36 minutes △ 3 = 13 & # 186; + 2 / 3 & # 186; + 12 '= 13 & # 186; + 40' + 12 '= 13 & # 186; 52'

The solution is as follows: (4x + 20) / 4 = (6x-20) / 5 + 2

x+5=6/5x-4+2
1/5x=7
x=35

Five thirds is nine

Fifteen out of nine

Urgent.. 200 / X - 200 / x + 20 = 0.5

Go to the denominator and multiply both sides by X (x + 20)
The solution of 200 * (x + 20) - 200X = 0.5x (x + 20)
x1=80 x2 = -100
Test when x = 80 and (- 100)
Left = 0.5 = right
So x = 80, x = - 100 are the solutions of the original equation

Reduction ratio 6 / 5:5 / 2 12.5:0.25 3.6:24

@"Science tutor" answers questions for you
6/5:5/2
=12:25
12.5:0.25
=1250:25
=50:1
3.6:24
=36:240
=3:20
@If you are not clear, you are welcome to ask. If you understand, please adopt it in time!

The symmetric axis of the parabola is a straight line x = 2, passing through points (1,4) and (5,0), and the relationship of the quadratic function is obtained. (required steps)

The axis of symmetry of the parabola is a straight line x = 2. Let the equation be y = a (X-2) ^ 2 + C
Passing through points (1,4) and (5,0)
4=a(1-2)^2+c
0=a(5-2)^2+c
A = - 1 / 2, C = 9 / 2
The equation is y = - 1 / 2 (X-2) ^ 2 + 9 / 2

What's the product of 6 divided by 1.5 and 3 multiplied by 3?

(1.5 △ 6 + 3) × 3, = (0.25 + 3) × 3, = 3.25 × 3, = 9.75; a: the product is 9.75

Let u = R, a = {x | x-a|

(- ∞, 1) and (6, + ∞)