Find the answer to this math problem and find the answer to this math problem

1) Solution: Because po ab, pi = pm po (m is the intersection point between po and the top of the circle o).

And pc=5 ab=4, so pm=5-4=1 pi =1 5=5 pi=root number 5

2) Because pt is tangent and pa ao is ap tangent.

So pt=pa connects ot because pt=pa ao=ao oa=ot (equal radius) aop pot angle poa = angular pot

Arc An = Arc NT (N is the intersection point above the po and the circle O) The central angle AON = the central angle NOC = 2 times the circumferential angle AON = the circumferential angle AOC, so the angle AOP = the angle ABC OP TB

3) Connect PO, connect OT because PT cuts the circle O, so the angle PTO=90° can be known CO=4-X (radius-AC) OP=PCco=25+16+X -8X=X -8X+41 (see PCO for the Pythagorean theorem).

ot =4 =16 pt =y so y+16=x +41-8x (Pythagorean theorem see rt pot) so y=x -8x+25

Dude's question is very simple!! Don't hang it out next time!! It can't be the finale. Study hard and make progress every day!

Organizational organization organization organizer.

Let the 7 numbers be x-3,,x,x+1,x+2,x+3(x-3) 2+(x-2) 2+(x-1) 2+x 2=(x+1) 2+(x+2) 2+(x+3) 2

4x^2-12x+14=3x^2+12x+14x^2-24x=0

x=0 or x=24

Because it is a positive integer, x=0 is rounded.

The equation for 7 numbers is 21, 22, 23, 24, 25, 26, 27: 21 2 + 22 2 + 23 2+ 24 2 = 25 2 + 26 2 + 27 2

1) The column formula represents a number that is 5 times larger than a, a number that is 4 times smaller than 2 times a and 3 smaller than 2 times a, and calculates the sum of these two numbers.

5 times larger than a 4:5a+4

2 times smaller than a 3:2a-3

The sum of the two: 5a+4+2a-3=7a+1

2) The column expression represents the number of 7 times of coin x and the number of large 3, -2 times of coin x and the number of small 5, and calculates the difference between these two numbers.

7 times larger x 3: 7x+3

-2 times smaller 5:-2x-5

Difference: 7x+3-(-2x-5)=7x+3+2x+5=9x+8The wheat planting area in a village is a hectare, the rice planting area is 3 times that of wheat, and the corn planting area is 5 hectares less than the wheat planting area. and calculate how much more rice is planted than maize.

Solution: Wheat A, Rice 3A, Corn: A-5

According to the title. Rice is larger than maize: 3a-(a-5) = 2a+5 hectares.

Assuming that this year's output value reaches x million yuan, then.

50=（50+x）*20%

x = 2 million yuan.

Find the coordinates of the two points: -x+2=-8 x

x is -2 or 4

So a(-2,4)b(4,-2).

Next, find the intersection point of the line ab(y=-x+2) and the x-axis (set to d), and then find the area of the two triangles acd (cd is the base, ac is high) and cdb (cd is the base, the distance from b to the x-axis is high) 4*4 2 = 8 4*2 2=4

The area of the triangle abc is the sum of the areas of the two small triangle rows = 12