(unit: cm) there is 1 long 15 wide 10 cuboid container with water. Put 4 eggs in it. The water rises by 2. There is a formula for calculating the volume of eggs. Thank you

(unit: cm) there is 1 long 15 wide 10 cuboid container with water. Put 4 eggs in it. The water rises by 2. There is a formula for calculating the volume of eggs. Thank you

15x10x2 = 300 cm3
One egg volume = 300 / 4 = 75 CC

A car from a to B is expected to travel 80 kilometers per hour and arrive in 13 hours. According to the plan, it takes 8 hours to drive and 4 hours to get to B. 1. What's the distance from a to B? 2. How many kilometers per hour does it take to drive on the back road?

5-80×5÷（80+100）
=5-400÷180
=5-20/9
=25 / 9 hours

(2005 + 1 / 2003) × 1 / 2004 simple algorithm 3 / 4 × 1 / 17 + 1 / 4 × 14 / 17 simple algorithm

(2005+1/2003)×1/2004
=（2004+2004/2003）/2004
=2004÷20042004/2003÷2004
=1+1/20003
=1 and 1 / 2003
3/4×1/17+1/4×14/17
=(3/4+1/4)×14/17
=14/17

A and B drive from a to B at the same time. A travels 80 kilometers per hour and B 72 kilometers per hour. After 2.5 hours, a arrives at B. how many kilometers is B away from B?

Total distance: 80 * 2.5 = 200m
B: 72 * 2.5 = 180m
Therefore, it is 200-180 meters away from the ground B
A
(agreed to be adopted.)

Solving the equations X: Y: z = 1:2:3 2x + 3Y + Z = 22

Let x = k, y = 2K, z = 3K
∵2x+3y+z=22
∴2k+3*2k+3k=22
11k=22
k=2
Substituting k = 2, we get x = 2, y = 4, z = 6

A and B leave from a and B at the same time and meet at 36km from the midpoint after 3 hours. It is known that the speed ratio of a and B is 3:2. How many kilometers are there between a and B?

A: the distance between a and B is 360 km

If the decimal point of a number is moved two places to the left, the difference between the new number and the original number is 30.69, and the original number is?

30.69÷(1-1/100)
=30.69÷99/100
=31
A: the original number is 31

A. B is 460 kilometers away from each other. Car a leaves two hours before car B leaves. After meeting car a for four hours, it is known that car a travels 10 kilometers more than car B every hour. How to find out
Speed of car a

Let a x km / h, then B (X-10) km / h equation is: 6x + 4 (X-10) = 460, the solution is: x = 50, that is, a speed of 50 km / h, if not unknown, then when a and B meet, a walk for 6 hours, B walk for 4 hours, a total of 460 kilometers, a more than B 10 kilometers per hour, then 6 hours more than 60 kilometers, 460-60 = 400

It is known that the equation Sina times x square-2 (sina-2) x + Sina + 4 = 0 has two equal real roots to find the degree of acute angle A

Sina * x ^ 2-2 (sina-2) x + Sina + 4 = 0 has two equal real roots
The results are as follows:
△=[-2(sina-2)]^2-4sinA(sinA+4)
=4sinA^2-8sinA+8-4sinA^2-16sinA
=-24sinA+8=0
=>
sinA=1/3
A=arcsin1/3

The distance between a and B is 576km. A car from a to B travels 360km in 5 hours. According to this calculation, how many hours does it take for the car to go from a to B?

Simple