The simple calculation is (13.3 1 / 3 × 1.5 4 + 1.5 4) × 9 / 5 and 4-1 ／ 3-3 / 1 × 8

The simple calculation is (13.3 1 / 3 × 1.5 4 + 1.5 4) × 9 / 5 and 4-1 ／ 3-3 / 1 × 8

(13 1 / 3 × 1 5 / 4 + 1 5 / 4) × 9 / 5
=（24+9/5）×5/9
=24×5/9+9/5×5/9
=40/3+1
=43/3
4-1 △ 1 / 3 × 8
=4-（1/3+8/3）
=4-3
=1

Lim x tends to infinity, the x-th power of (2 + x) * E-X
I can't insert pictures,
Lim [(2 + x) * E1 / X – x] (x tends to 0)

See the attached figure

As shown in the figure, the side length of equilateral triangle ABC is 4, and circle O is the inscribed circle of equilateral triangle ABC. Find the radius of circle o

Radius r, do od vertical AB, perpendicular foot is d point, connect OA, then triangle oad: OA = 2R, ad = AB / 2 = 4 / 2 = 2, 2R * 2R = 2 * 2 + R * r 3R * r = 2 * 2, r = 2 √ 3

The range of function y = X-2 / X-1. The range of function y = √ x + 1. The range of function y = (3x + 2) / (x-1)

(1) y=(x-1-1)/(x-1)
=1-1/(x-1)
x-1≠0
1/(x-1)≠0
y≠1
（2）√x≥0
So y ≥ 1
（3）y=(3x-3+5)/(x-1)
=3+5/(x-1)
x-1≠0
5/(x-1)≠0
y≠3

What is the value of arcsin (1 / 3 + sin π / 6)?

sinπ/6=1/2
1/3+1/2=5/6
The answer should be arcsin 5 / 6. You can calculate the specific number with a computer

There is a rectangular stadium. If its length and width are increased by 6 meters, the area will be increased by 1236. What is the perimeter of the original stadium?

400

Answers to p119 ~ 121 in the seventh grade mathematics evaluation manual

Question 12: suppose the forged steel is x meters high, from the question we can get: 0.008x = 0.63; 0.008x = 0.216 x = 27 A: the forged steel is 27 meters high

If the image of function y = root 3x and function y = K / X intersect at point a in the first quadrant, and AO = 2, then K?

I don't know that in the first function, X is not in the root sign, but it doesn't matter. To provide the next idea, let the coordinates of intersection a be (x, y). We can get the values of X and Y through the first function and AO = 2. X and Y should satisfy the first function and satisfy x ^ 2 + y ^ 2 = 4. We can solve X by directly substituting y of the first function into this equation. In this way, y also comes out. Note that both X and y are greater than 0, Then we substitute X and Y into y = K / X and K comes out

Tpueicr arranges letters into words

Two answers:
① Cuprite
② Picture, picture, film, description, scene, etc

What is the maximum volume of a cylinder made of 12.56 decimeters long and 10 decimeters wide iron sheet?

12.56÷3.14=4 3.14×﹙4÷2﹚²=12.56 12.56×10=125.6