Fill in the blanks in math 8 1. Given that point a (3, b) is in the first quadrant, then point B (3, - b) is in the second quadrant___________ Quadrant 2. The point P coordinates (3,4) are symmetric about the X axis______ The coordinates of the point Q (- 2,1) which is symmetric about the origin are______ . 3. Given that the distance between the point P on the X axis and the Y axis is 3, then the coordinate of the point P is___________ . 4. Given that point a (2, y) and point B (x, - 3) are symmetric about the Y axis, then xy =__________ . 5. There is a roundabout at an intersection. Car a is 5km to the east of the roundabout and car B is 7km to the north of the roundabout. Car a and car B start at the same speed to the direction of the roundabout at the same time. When car a reaches 1km to the west of the roundabout, car B is at the right side of the roundabout_________ Place 6. In the plane rectangular coordinate system, the point P (&; 3, A2 + 1) must be in the second position_______ Quadrant

Fill in the blanks in math 8 1. Given that point a (3, b) is in the first quadrant, then point B (3, - b) is in the second quadrant___________ Quadrant 2. The point P coordinates (3,4) are symmetric about the X axis______ The coordinates of the point Q (- 2,1) which is symmetric about the origin are______ . 3. Given that the distance between the point P on the X axis and the Y axis is 3, then the coordinate of the point P is___________ . 4. Given that point a (2, y) and point B (x, - 3) are symmetric about the Y axis, then xy =__________ . 5. There is a roundabout at an intersection. Car a is 5km to the east of the roundabout and car B is 7km to the north of the roundabout. Car a and car B start at the same speed to the direction of the roundabout at the same time. When car a reaches 1km to the west of the roundabout, car B is at the right side of the roundabout_________ Place 6. In the plane rectangular coordinate system, the point P (&; 3, A2 + 1) must be in the second position_______ Quadrant

1. Given that point a (3, b) is in the first quadrant, then point B (3, - b) is in the second quadrant_____ Four______ Quadrant
2. The point P coordinates (3,4) are symmetric about the X axis___ （3,-4）___ The coordinates of the point Q (- 2,1) which is symmetric about the origin are__ （2,-1）____ .
3. Given that the distance between the point P on the X axis and the Y axis is 3, then the coordinate of the point P is____ (3,0) or (- 3,0)_______ .
4. Given that point a (2, y) and point B (x, - 3) are symmetric about the Y axis, then xy =___ 6_______ .
5. There is a roundabout at an intersection. Car a is 5km to the east of the roundabout and car B is 7km to the north of the roundabout. Car a and car B start at the same speed to the direction of the roundabout at the same time. When car a reaches 1km to the west of the roundabout, car B is at the right side of the roundabout______ 1km___ Place
6. In the plane rectangular coordinate system, the point P (&; 3, A2 + 1) must be in the second position___ 2____ Quadrant

If the sum of a and B is 10, the number of a increases by 10%, and the number of B increases by 15%. Then the sum of two books increases by 12.6%, and the number of a is (), and the number of B is ()
If the length of the base of a triangle increases by 10%, and the height of the base decreases by 10%, then the area of the new triangle is () of that of the original triangle

A15, B20

1. If ax by = 4, ax + by = 2 and 2x + 3Y = 9, 4x-5y = 7 have the same solution, then a=_______ ,b=________ .
2. Given x + y + Z = 1, x + y + T = 2, x + Z + T = 3, y + Z + T = 9, then the value of X + y + Z + T is_________ .

1.a=1,b=-1
two point five

Ask you two math fill in the blanks, 55555
1. The sum of the three fractions is 2 and 1 / 10. They have the same denominator. The ratio of the molecules is 1:2:3. The three fractions are ()
2. Number a is 1 / 4 of number B, number C is 1 / 3 of number B, number A: B: C = (): ()

1. The sum of the three fractions is 2 and 1 / 10. They have the same denominator, and the ratio of molecules is 1:2:3. The three fractions are (7 / 20) (14 / 20) (21 / 20)
2. Number a is 1 / 4 of number B, number C is 1 / 3 of number B, number A: B: C = (3): (12): (4)

|X | = 3, the square of y = 16, XY

∵y²=16
∴y=±4
∵|x|=3
∴x=±3
∵xy

The proportion can be made up of 2, 4, 12 and ()

There are three numbers in this question, which are 2 / 3, 6 and 24
The analysis is as follows: multiply every two of the three given numbers by the unknown
2 × 12 = 4A, a = 6, then 2:4 = 6:12
4 × 12 = 2B, B = 24, where 2:4 = 12:24
2 × 4 = 12C, C = 2 / 3, then (2 / 3): 2 = 4:12

The diameter of the bottom of a cylindrical cake box is 40cm and the height is 14cm. Tie it with color rope. The knot is at the center of the bottom circle. The color rope of the knot part is 30cm long. Then the total length of the vegetable rope is () cm!

The binding cake box is a cross, which needs 4 bottom diameters and 4 heights
The rope is long
(40 + 14) × 4 + 30 = 246 (CM)

The surface area of the cuboid is ()
Or () square centimeter?
There are two ways to make a cuboid, one is to put four in a horizontal direction, the other is to put two in two rows and two in one row. Their surface areas are different, so we need to calculate the surface areas of two

(1*1+1*4+1*4)*2=18
(2*2+2*1+2*1)*2=16
So it's 18 or 16 square centimeters

Centrosymmetry is said to (), which means () between two figures. Centrosymmetric figure is said to (), which means () characteristics

The two figures are symmetrical
A figure, this figure is symmetrical (the vertical one behind is not sure.)

Help to do the following fill in the blanks
Mrs Black loves flowers very much and she has a small but beautiful garden,In summer the flowers are very n______ .

Nice should be OK, pretty