The degree of monomial constant is 0. Why

The degree of monomial constant is 0. Why

The number is the sum of the exponents of the letters in the formula
There is no letter in the constant term, that is to say, the number of letters in the constant term is 0, because the power of 0 of any number is 1
The constant term multiplied by 1 is of course a constant term

If the monomial formula 5x ^ 3 and - 8x ^ my ^ 2 are of the same kind, then 5x ^ 3Y ^ n - (- 8x ^ my ^ 2)=

=I haven't done this kind of topic for a long time. I'll write it first
∵ similar items
∴m+2=3,m=1
Substituting the required formula
Sister, what is n? Did you write the wrong topic!

The original price of a TV set is 1200 yuan, but now it's only 960 yuan per set. What's the price reduction?

(1200-960) △ 1200 = 240 △ 1200, = 20%; a: 20% reduction

(2006/1-1)(2005/1-1)(2004/1-1)----(1001/1-1)(1000/1-1)

=(1/2006-1)(1/2005-1)****(1/1000-1)
=-(1-1/2006)(1-1/2005)****(1-1/1000)
=-2005/2006*2004/2005****999/1000
=-999/2006

Help me to do inequality math
By the way, help me draw the number axis!

1.X=14/3
The number axis can't be drawn

If a commodity is sold at 80% of the marked price, it will get a profit of 960 yuan. If it is sold at 80% of the marked price, it will lose 832 yuan compared with the cost price. What is the cost price of this commodity?

(960 + 832) △ 1-80% = 1792 △ 20% = 8960 (yuan) 8960-960 = 8000 (yuan) a: the cost price of this commodity is 8000 yuan

The speed of the earth around the sun is about 1.1 × 10 km / h, and the speed of sound in the air is about 340 km / s

"The speed of the earth around the sun" is about 1.1 * 10 ^ 3km / h = 1.1 * 10 ^ 3 * 10 ^ 3m / 3600s = 305.56m/s, the propagation speed of sound in the air is about 340m / s, and "the speed of the earth around the sun" is smaller

The distance between two points in a few weeks is equal to the absolute value of the corresponding difference
(1) The distance between - 3 and - 9 on the number axis is (); the distance between 2 and - 8 on the number axis is ();
(2) The distance between two points a and B representing X and - 2 on the number axis is (); if AB = 4, then x is ();
(2) When the algebraic formula x + 1 + X-2 + x-3 takes the minimum value, the corresponding value of X is ()

6,10
|X + 2 |, 2 and - 6
two

Mathematics The coordinates of point a (- 1, - 3) with respect to the x-axis symmetry point are () with respect to the y-axis symmetry point are () with respect to the origin symmetry point are ()

（-1,3）（1,-3）（1,3）

6.01 minus 4.38 plus 0.99, is there a simple algorithm

6.01 minus 4.38 plus 0.99
=6.01+0.99-4.38
=7-4.38
=2.62