Who can help me translate the second text of the eighth grade English volume I,

Who can help me translate the second text of the eighth grade English volume I,

You download a Baidu translation, I am translating papers, almost finished

Urgent! New target English Text Translation -- grade 8 (Volume 1)
Translation of Part 2 on page 76 of new target in English volume 1 of Grade 8

Sanya is a city in Hainan Province in southern China. It is still warm in winter. Its temperature is about 15 ℃ in the afternoon. Sanya has an independent beach. You can stay in a hotel for 320 yuan for one night. Harbin is in northern China. It is very cold in winter, sometimes it can reach minus 30 ℃

It is known that the area of a square is (A2 + 8A + 16) square meters

∵ the area of a square is (A2 + 8A + 16) square meters, the side length of a square is A2 + 8A + 16 = (a + 4) 2 = | a + 4 |, then the perimeter of the square is 4 | a + 4 |

What's the formula for calculating the average velocity in physics? It's fast and accurate,

It depends on whether you are a junior high school student, a senior high school student or a college student. The calculation tools are different
The average speed of junior high school physics calculation is the total distance divided by time. Senior high school physics calculation is the vector sum of the multiplication of speed (vector) and time (scalar) divided by time. College physics is the integral of speed over time divided by the total time

1. The quadratic trinomial x ^ 2 + 2rnx + 4-m ^ 2 of X is a complete square expression, and the value of M can be obtained
2. M is a non negative integer, and the equation m ^ 2x ^ 2 - (3m ^ 2-8m) x + 2m-13m + 15 = 0 has at least one integer root. Find the value of M
M is not an integer in the second question. I can't do the first question at all!

1) If the discriminant is 0, delta = 4 (m ^ 2-4 + m ^ 2) = 8 (m ^ 2-2) = 0, then M = √ 2 or - √ 2
2) When m = 0, the equation is; 15 = 0, which is obviously inconsistent
When M0, m ^ 2x ^ 2 - (3m ^ 2-8m) x + 2m ^ 2-13m + 15 = 0 can be decomposed as follows:
m^2x^2- (3m^2-8m)x+(2m-3)(m-5)=0
[mx-(m-5)][mx-(2m-3)]=0
x1=(m-5)/m=1-5/m
x2=(2m-3)/m=2-3/m
Therefore, to have one of X1 and X2 as an integer, m needs to be a factor of 3 or 5,
That is, M can be: 1, - 1,3, - 3,5, - 5

If you want to use the rectangular paper 84 cm in length and 72 cm in width to cut it into a square paper of the same size to make a lantern, if you want to have no surplus, the edge of the square paper will be the same
How many centimeters is the maximum length?

This problem is solved by the principle of finding the greatest common factor
If we want to cut the rectangle into the largest square of the same size and have no remainder, we need to find the greatest common factor of 84 and 72
84=2×2×3×7
72=2×2×2×3×3
The greatest common factor of 84 and 72 is 2 × 2 × 3 = 12
So the maximum side length of this square is 12 cm

Formula for surface area and volume of a cone?

The volume formula of the cone: v = [S + s' + √ (SS')] h △ 3 = π H (R & # 178; + RR + R & # 178;) / 3
The formula of the surface area of a round table is: S = π R & # 178; + π R & # 178; + π RL + π RL = π (R & # 178; + R & # 178; + RL + RL)
R - upper and lower radius
R - bottom radius
H-high
L-bus

Divide two numbers, quotient 3 is more than 10, divisor, divisor, sum of quotient and remainder is 143, how much is the divisor

Divisor (143-3-10-10) / (3 + 1)
=120÷4
=30
Divisor 30 × 3 + 10 = 100

The area of the cone bottom is 4 μ cm2, the length of the generatrix is 6cm, and the degree of the center angle of the side expanded view is calculated

The area formula of a circle is: R * r * u (U multiplied by the square of radius). If the base area of a cone is 4 u, then r = 2 can be obtained. Because the side area of a cone is: u * r * l (generatrix * radius * U) and L = 6cm r = 2m, the side area of a cone is s = 2 * 6 * u = 12 U

How to save MATLAB as. M file?
Enter the Save command directly to save in. Mat format. Are these two. M and. Mat the same? How to save as. M file?

Create M-file: file-new-m-file, then you can open the window to write the file. Then open debug save and run in the command window, so that you can save it to the specified place. Note that when naming, do not use the function name in M-file as the file name