A number must be bigger than its reciprocal

A number must be bigger than its reciprocal

A number must be bigger than its reciprocal

Known: parallelogram ABCD, where the coordinates of three vertices are a (- 1,2,3), B (2, - 2,3), C (1,5,1), then the coordinates of the fourth vertex D are______ ．

Let the coordinates of the fourth vertex d be (x, y). ∵ AB = (3, − 4, 0), DC = (1-x, 5-y, 1-z). From the parallelogram ABCD, we can get AB = DC, ∵ 1 − x = 35 − y = − 41 − z = 0, the solution is x = - 2, y = 9, z = 1. ∵ D (- 2, 9, 1). So the answer is (- 2, 9, 1)

97 / 99 * 98 + 97 / 99 simple algorithm

97/99*98+97/99=97/99*98+97/99*1=97/99*(98+1)
=97/99*99=97

When the lamp switch is turned on, when the lamp plug is inserted into the socket, all the lamps in the house will go out and the fuse will blow
There is a short circuit at the switch of table lamp a
There is a short circuit at the socket of table lamp B
C. the original short circuit at the socket
D table lamp plug original short circuit phenomenon

D

The area of a trapezoid is equal to that of a parallelogram. The top of the trapezoid is 40 meters, the bottom is 64 meters, and the height is 60 meters
I don't understand the complexity,

The trapezoidal area is (40 + 64) × 60 △ 2 = 3120 square meters
So the area of parallelogram is 3120 square meters

592-38 62 how to calculate simply

592-38-62
=592-(38+62)
=592-100
=492

1. How many decimeters is the length of a cube iron block whose edge length is 4dm and whose height and width are 10cm?
2. The volume of the two cuboids is equal. The first cuboid is 12dm long, 8dm wide and 5DM high. The bottom area of the second cuboid is 40 square decimeters. How many decimeters high is it?

10cm=1dm
(4X4X4)÷(1X1)
=64÷1
=64 decimeters
The length is 64 decimeters
(12X8X5)÷40
=480÷40
=12 decimeters
The height is 12 decimeters

In the parallelogram ABCD, e is the midpoint of BC, BF = 2  1fa is intercepted on AB, BD is intersected with G, and BG: GD is obtained
In the parallelogram ABCD, e is the middle point of BC, BF = 2,1fa is intercepted on AB, EF intersects BD with G, and BG: GD is obtained

Are you sure your topic is right?
Intercept BF = 2 / 1fa on AB, it's 1 / 2
Who gave BD to G
Why can't I get it

The speed of the earth's revolution around the sun is about 1.1 * 10 ^ 5km / h, and the propagation speed of sound in the air is about 330m / s, which is the comparison of the two speeds

1 m / S = 3.6 km / h
So 330 M / S = 1188 km / h

What's the volume of the largest cone formed by a 24 cm cylindrical pin?

If the volume of the cylinder is 24cm & sup3;,
Cone = 24 △ 3 = 8 (CM & sup3;)
That is to say, the volume of cone is 1 / 3 of the cylinder with equal base and height