At the back of the classroom

At the back of the classroom

At the back of the classroom
Behind the classroom

This is me, how to say in English!
I am what I am!
How to say that!

This is me .

That's what I say in English

This is me

The density of a metal block is 6.7 * 10 cubic meters, and the volume is 15 cubic centimeters. The mass of the metal block can be calculated

Volume 15cm3 = 0.015m3 mass = volume × density = 6.7 * 10m3 × 0.015m3 = 100.5kg

2. The addition, subtraction, multiplication and division of 4, 6 and 8 are equal to 1

4÷（2+8-6）=1

Why is left and right translation of a function image left plus right minus?
Please explain it in detail by graph and analytic formula (do not introduce quadratic and other functions)

Let's talk about the graph by yourself. For example, if y = the square of X, the image passes through (0,0). After you move a unit to the right, note that the Y coordinate will not change, so (0,0) - > (a, 0);
The expression becomes the square of y = (x-a);

The 1-meter-long cylinder wood is sawed into three sections of the same cylinder wood, and the surface area is increased by 360 square centimeters. What is the volume of this 1-meter-long cylinder wood

When sawing into 3 sections, the number of additional cross sections is
(3-1) × 2 = 4
What is the cross-sectional area of wood
360 △ 4 = 90 (square centimeter)
1m = 100cm
What is the volume of wood
90 × 100 = 9000 (cm3)

Negative 3 negative 13 5 7 is 24 points

(-7+5*(-13))/(-3)=24

30. Find the derivatives of the following functions: (1) given x = 2t-t ^ 2, y = 3t-t ^ 3, find dy / DX
Process, thank you

dy/dx=(dy/dt)/(dx/dt)=(3-3t^2)/(2-2t)=1.5(1+t)

How many inches is one square meter

Square meter is the unit of area, inch is the unit of length, the two can not be converted
1m = 39.3700787 in
1 square meter = 1 550.0031 square inch