Math knowledge master, please help!!

If the equation is solved, according to the problem, the number B has not changed, then the equation can be listed according to the "product number A = number B".

Solution: Let the number of armor be x.

14÷x=14x+14=

x=14 x=4 B=14 4=

Let A be x and B be y

xy=14 (1)

x+1)*y= (2)

Obtained from (1).

y=14/x

Obtained from (2).

y=so. 14/x=

x=4so.

y=i.e.: A = 4 B =

A plus one multiplied by B is equal to adding one B, because A multiplied by B = k, (A 1) B = A times B + B = k + B. Therefore, B is, then A is 14

1. Common stereoscopic images: (1) (cylinder): such as cylinder, prism; (2) (cone): such as cone, pyramid; (3) (sphere).

2. The upper and lower bottom surfaces of the prism are (parallel) polygons, the number of side edges and the number of sides are equal to the number of sides of the bottom surface, and the two adjacent side edges are (parallel) and (equal), and each side is (parallelogram).

3. Use a plane to cut off a geometry, and the cut (polygon) is called a cross-section.

4. Plane graphics are related to line segments: among all the lines between two points, (the line segment is the shortest).

5. There are five common basic diagrams: (1) making a line segment equal to a known line segment, (2) making an angle equal to a known angle, (3) bisector of angles, (4) perpendicular bisector of a line segment, and (5) passing a point to make a perpendicular line of a known straight line.

6. Proposition: A statement that can judge a thing. It consists of two parts: (conditions) and (conclusions). The steps of propositional proof: (1) write (known) and (verify); (2) Draw (graphics) according to the theme; (3) Write out the proof process.

Analytical, graph, table.

2. List, point, drawing.

3 all real numbers; The denominator is not 0; The number of squares to be opened is a non-negative number; All real numbers.

4 hyperbola, no intersection, one three, decrease; Twenty-four, increase.

m=0 is obviously vertical.

y=-mxy=-1/m *x+2/m

The product of the oblique pin rate is -m*-1 m=1

So you can only swim m=0 perpendicular to each other.

Parallel m=0 holds.

1-3m):m=1:2m

2m(1-3m)-m=0

m(2-6m-1)=0

m(1-6m)=0

m = 0 or m = 1 6

(1)1600-x+x+2400+x

4000+x

2) When x is equal to 600, the sum of distances is 4600Therefore, the station should be located between AC, 600 meters away from Village C.

3) When x=0, distance sum minimum. The station is located in Village C.

x+4000

It should have been built at a location 600 meters from village c.

The station should be built at Village C.

Solution: 2 and 1/4) squared 4 squared = (9/4) squared 4 squared = 9 squared 4 squared 4 squared = 81

4 to the 12th power = (12 to the power (-1) to the 12th power = 1

25 squared

1/2 squared] to the 3rd power 2 to the 3rd power = 1/2 to the 6th power 2 to the 9th power.

1 2 to the 6th power 2 to the 9th power = 2 to the 3rd power = 8

Solution: Because m(2,0), it takes 2 minutes to go uphill to the top of the slope, so the uphill speed = 480 2 = 240 m min.

Because the downhill speed is a multiple of the uphill speed, the downhill speed = 240 * m minutes, so the downhill time = 480 360 = 4 3 minutes, so a(4 3 + 2,0), that is, a(10 3,0).

The analytic formula of the straight line where ob (uphill) is located: y=240x.

The analytic formula of the straight line where ab (downhill) is located: y=-360(x-10 3)=-360x+1200.

Uphill, when y=300, x=5 for 4 minutes.

Downhill, when y=300, x=(1200-300) 360=5 for 2 minutes. 5 2-5 4 = 5 4 minutes.

A: It takes 5 4 minutes to go uphill to the sign, and 5 to 4 minutes back to the sign.