Hello, I have three questions that I can help you solve

Hehe, it means that I can't read English.

The first:The volume of water does not change, so the volume should be equal after changing direction, and the original volume is calculated:

v=20*10*5=1000cm³;

The volume after the conversion direction = 10 * 8 * high, the volume before and after is equal, so 10 * 8 * high = 1000, so, height = 1000 10 8 =

The second:Volume of potatoes = volume due to changes in water surface after potatoes are placed in water = 2*The third:2m of the stone pillar placed in the standing position is exposed on the surface of the water, so this part will not let the water overflow, and the only thing that can make the water overflow is 2m below the water surface, and the volume of the overflow water is equal to the volume of the stone pillar that is actually under the water surface

3*2*2=12m, there are two stone pillars, so, multiply the volume by 2, it is 24m

30a = W A County B County.

a=w 30 A 40 80

B 30 50

Set the pants round B to transfer to car A in county A.

B County 6-A car.

Set A was transferred to County A 10-A.

County B 12-(10-a) = 2+A vehicles.

Total shipping cost = 30a + (6-a) * 50 + (10-a) * 40 + (2 + a) * 80<900

w+300-5w/3+400-4w/3+160+8w/3<9002w/3+860<900

w<60

When a = 0, 1a = 0, the total freight = 300 + 400 + 160 = 860a = 1, the total freight = 30 + 250 + 360 + 240 = 880 There is no figure for the second Hu Hu collapse.

x+y=3x+2y=

x=a+b=50

100100<50+3b<110

50 do plex 316b = 17 a = 33

b=18 a=32

b=19 a=31

100a+300b-3600-1000c-4000d=05000-100b+300b-3600-1000c-4000d=0200b+1400-1000c-4000d=0b=18 a=32

Give zero points for such a long question, you are in front of your family'

I don't know what these questions mean, but how about I can translate them for you? May I? Hurry up with me.

6x y 203, 2x y 91.

1＋66×6）÷7＝56...5 Remainder 5

5y 3 x , 3x 3y 8 149 do the math......It's not easy to press the phone, ah......

<> is like a closed limb in a sullen state.

Is the l in the first question 2? I made a mistake!

21.Treat a as x, b as y, and plot it with linear programming, and solve [7,14] >=4 root number xy

So the maximum value of xy is 1 16

23.Replace y with x, we get (1-x) x(1-2x), so that 1-x = t, we get t (-2t squared + 3t-1), and divide by t up and down, and because 1 2< x<1, the minimum value of the solution is 3+2 root number 2