6:5:4:3 and 0.3:11:6 ratio

6:5:4:3 and 0.3:11:6 ratio

5 out of 6: 3 out of 4
Multiply both sides by 12
10：9
The ratio is 10 out of 9
3:6 / 11
=3 out of 10: 6 out of 11
=11：20
The ratio is 11 out of 20

Calculation of quadratic radical
When x is a value, the following format makes sense in the range of real numbers
Root minus five x
Root minus x + one third
Radical x + 1 / 1
calculation
The square of the negative root of the bracket
Square of root (- 3M) (M is greater than or equal to 0)
Square of root (M-4) (M is less than or equal to 4)

The root sign negative quintile X - X / 5 > = 0 x = 0 x0 x > - 1
Absolute value of a ^ 2 = a under root sign
Bracket negative root three quarters square of bracket = - 3 / 4
Square of root sign (- 3M) = 3M square of root sign (M-4) = 4-m

As shown in the figure, in the quadrilateral ABCD, ad is parallel to BC, angle B is equal to 90 °, AB is equal to 8 cm, ad is equal to 24 cm, BC is equal to 26 cm, point P starts from point a and moves to point d at the speed of 1 cm / s; point Q starts from point C at the same time and moves to point B at the speed of 3 cm / s. when one of the moving points reaches the end point, the other point also stops moving, How long does it take to cut and why?

(1) Let PQCD be a parallelogram passing through XS quadrilateral, that is, PD = CQ, so 24-x = 3x gets x = 6. (3 points) (2) let PQCD be an isosceles trapezoid passing through ts. let QE ⊥ AD and DF ⊥ BC ⊙ be an isosceles trapezoid passing through q-point and DF ⊥ BC ≌ be an isosceles trapezoid passing through d-point

Given that | m-2013 | and (n-2014) & # 178; are opposite numbers, find the value of (m-n) & # 178; & # 186; & # 185; & # 179

If / m-2013 / + (n-2014) &# 178; = 0 ᚛ / m-2013 / ≥ 0 (n-2014) &# 178; ≥ 0 ᚛; m-2013 = 0, n-2014 = 0 ᚛ M = 2013, n = 2014 ᚛ (m-n) ^ 2013 = (2013-2014) ^ 2013 = (- 1) ^ 2013 = - 1

Applied problems of two-step mathematics calculation in Volume 2 of grade 3 of primary school

1. There are two balls in each box and five in each row. How many balls are there in three rows?
2. Each vehicle carries 9 tons of goods each time, and there are 6 vehicles. How many tons of goods do these vehicles transport four times?
3. A kind of high-grade ceramic tile is 13 yuan per piece and 25 pieces per box. Xiao Gang bought 3 boxes when he was repairing at home. How much is the total?
4. There are 700 books in the school library. There are 7 bookshelves. Each bookshelf has 5 layers. How many books are put in each layer?
5. The school organized 540 students to plant trees. They should be divided into five tree planting sites, and each tree planting site should be divided into nine groups. How many people in each group?
6. Five trucks of cucumbers were transported from the market, 70 bags per truck and 20 kg per bag. How many kg cucumbers were transported in total?
7. Guangming primary school teaching building has three floors, each floor has 12 classrooms, each classroom is installed with 6 fluorescent lamps. How many of these classrooms are installed?
8. There are 180 pots of Phalaenopsis in the flower bed of the school, 15 pots less than 3 times of rose. How many pots of rose?
9. Xiaoming family has 275 chickens, 25 more than the number of calves. How many calves are there?
Mom bought 7 cups for 105 yuan, but she didn't think it was enough. She bought 3 more cups. How much did mom spend on the cups?
11. A script has 16 pages, 10 lines on each page, and each line can write 8 big characters. How many big characters does this instinct write?
12. A bookshelf has five layers, and the first layer holds 30 books. How many books can six such bookshelves hold?
13. A flour grinder can grind 50 kg of flour per hour. How many kg of flour can four such flour grinders grind in 8 hours?
14. On tree planting day, the students were divided into eight groups, each group of five people, a total of 160 trees. How many trees did each person plant on average?
15. 820Kg eggplant was transported to the supermarket for 4 times, 5 boxes each time. How many kg can each box hold?
16. During the military training, the students walked 12 kilometers in 3 hours. At this speed, they still have to walk 2 hours to reach their destination. How many kilometers did they walk this time?
17. Five bags hold 40 apples. How many bags can 96 apples hold?
18. How many erasers can you buy for 4 Diaries?
19. There are 400 story books in the book corner of the classroom, 36 more than 7 times of science and technology books. How many science and technology books?
20. Pour milk into an empty bottle with one cup. If two cups of milk are poured into the bottle, the total weight of the bottle is 450 grams. If five cups of milk are poured into the bottle, the total weight of the bottle is 750 grams. How many grams are each of a cup of milk and an empty bottle?
21. There is an empty bottle. After pouring 2 cups of water, the weight of water and bottle is 480g. After pouring 4 cups of water, the weight of water and bottle is 780g. How much does a glass of water weigh and how much does an empty bottle weigh?
22. A healthy adult has an average heart rate of 72 beats per minute. According to this calculation, how many beats does a healthy adult have in 10 hours?
23. The width of the roller of the paver is 3 meters, and it advances 400 meters per hour. According to this calculation, how many square meters can it pave when it works for 3 hours?
24. A radio costs 85 yuan, and the price of a TV set is 36 times that of a radio. How much is a TV set more expensive than a radio?
25. A batch of rice is transported by one truck, and 70 bags are transported by one truck. 15 trucks have been transported, and now there are 70 bags left. How many bags of rice are there?
26. Dad bought 5 cases of drinks, which cost 240 yuan in total, 8 bottles in each case. How much is each bottle of drinks?
27. Xiaogang has three cows. This Monday, the total milk is 525 kg. How many kg does each cow produce per day?
28. Mom and Dad take Xiaohong and Xiaoli to an aquarium to see a performance. The total cost is 120 yuan. The adult ticket is 45 yuan. How much is the student ticket?

If the ratio of length to width of a rectangle is 4:5 and its area is 720, what is the perimeter of the rectangle?
Quick increase

The circumference is 108 24 * 30 rectangle
Specifically
Let the width and length be 4x and 5x respectively
The area is 4x * 5x = 720 and the solution is x = 6
So the side length of a rectangle is 4 * 6 = 24 and 5 * 6 = 30
So the perimeter is 2 * (24 + 30) = 108

How many square meters is three fifths of a hectare?

6000

The lower railway of Nanjing Yangtze River Bridge is 6772m in length, of which the main river bridge is 2km long and a train is 428m long. It takes 1min 40s for the train to pass through the main bridge. How long does it take for the train to pass through the whole railway bridge at this speed?

It is known that: the main railway bridge L is 2000m, the time for the train to pass through the main bridge T1 = 1min40s, the total length of the railway bridge L is 6772m, the time for the train to pass through the whole railway bridge T2. (1) the distance for the train to pass through the main bridge: S1 = l main bridge + L car = 2000m + 428m = 2428m

The side length of rectangle ABCD is ab = 10cm, BC = 5cm, and a cylinder is obtained by rotating the rectangle around AD axis, then the volume of the cylinder is______ Cubic centimeter with a surface area of______ Square centimeter

3.14 × 102 × 5 = 3.14 × 100 × 5 = 1570 (cm3) 2 × 3.14 × 102 + 2 × 3.14 × 10 × 5 = 2 × 3.14 × 10 × (10 + 5) = 62.8 × 15 = 942 (cm2), so the volume of the cylinder is 1570 cubic centimeter and the surface area is 942 square centimeter

The speed of light propagating in vacuum is 3 times 10 to the eighth meter per second. What is the physical meaning of it

Light travels 3 times 10 to the eighth power meter per second in a vacuum