Question 9: Who will?? Hurry, hurry, hurry

Solution: The length of each segment is an integer not less than 1 (cm), the smallest side is at least 1, and the three line segments cannot form a triangle, then the second segment is 1, the third segment is 2, and the fourth segment is the same.

Second, the third paragraph can not form a triangle, then the fourth side is the minimum is 3, the fifth side is 5, in order is 8, 13, 21, 34, 55, and then larger, the sum of each small section is greater than 150cm, does not meet the conditions

Therefore, the maximum value of n is 10, and the wire with a length of 150 cm is divided into 10 sections that meet the conditions, and there are the following 7 ways:

At this time, there are 7 ways to cut the wire into 10 sections that meet the conditions

All three questions give length and width, and the length multiplied by the width is the area.

Cm.

Cm. Cm.

About A: The above description of upward acceleration can be decomposed into an acceleration between upward and horizontal forward, and the force and forward traction.

B: The amount of pressure on the pedal is greater than the gravitational force of the person (the same as explained by A) C: The work done by the pedal on the person is greater than the increase in the mechanical energy of the person (as explained by A, there are upward and right forces).

d: Through the conservation of energy, the work done by external force from the bottom to the top of the elevator is equal to the increase of mechanical energy.

I don't know if d is right or not.

d。。。A is wrong, and there is friction.

B is false, there is an upward acceleration.

c False, the person also has the amount of velocity increase in the horizontal direction.

d correct.

①is mary there please②where do you go at this time yesterday

what's the name of the movie④baihow was the movie。

when and where do we meet。

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The main topic of this question is to examine the use of special ** words, daily greetings and interrogative sentences in English.

The length and width of the bottom surface are equal, indicating that the base area is square and the four side areas are equal to the four sides.

So the height of this cuboid is:

102 3 3 2) 4 3=7 cm.

Solution: 102-2 3 3 = 84 (cm).

84÷3÷4=7（cm）

A: The height of this cuboid is 7 centimeters.

Set: The second piece of iron bai

The plate weighs x kg, one iron plate is 2x, and the third iron plate is 4x, 2 + 4 = 210

Solution DAO: 7 = 210

30 (kg).

The weight of the first iron plate is: 30 2 = 60 (kg) and the weight of the third iron plate is: 30 4 = 120 (kg).

A: The first iron plate weighs 60 kilograms, and the second iron plate weighs 30 kilograms. The third iron plate weighed 120 kg.

You can also solve problems using fractions.

You have the right understanding, and you have to believe in yourself.

Question 8. According to the title, the area of the shaded part is 9 square centimeters, that is, the triangle folded from the parallelogram is 9 square centimeters. The area of the parallelogram with this triangle as the base is 9*2=18 square centimeters.

According to the proportions, the parallelogram with the triangle as the base is 3 (2+3)=3 5 square centimeters of the large parallelogram. Then the area of the silver jelmut is 18 (3 5) = 30 square centimeters.