Given that a * a * a * a * a = b * b * B, c * c * c * = D * D, C-A = 19, find D-B =?

Given that a * a * a * a * a = b * b * B, c * c * c * = D * D, C-A = 19, find D-B =?

[Note: A ^ 5 = a * a * a * a * a] from a ^ 5 = B ^ 4: a = B ^ 4 / A ^ 4 = (b ^ 2 / A ^ 2) ^ 2; from C ^ 3 = D ^ 2: C = D ^ 2 / C ^ 2 = (D / C) ^ 2; substituting C-A = 19, we can get (D / C) ^ 2 - (b ^ 2 / A ^ 2) ^ 2 = 19 (D / C + B ^ 2 / A ^ 2) × (D / C-B ^ 2 / A ^ 2) = 19 = 19 × 1

A shopping mall wants to buy 50 pieces of a and B commodities. The price of a commodity is 35 yuan per piece, and the profit rate is 20%. The price of B commodity is 20 yuan per piece, and the profit rate is 15%. The total profit is 278 yuan. How many pieces of a and B commodities do you buy?

Let a and B buy X and Y pieces respectively. According to the meaning of the question, we get: x + y = 5020% × 35x + 15% × 20Y = 278. The solution is: x = 32y = 18. Answer: A and B buy 32 and 18 pieces respectively

Known: XXY + XYY = 96 (XX means the square of X, YY means the square of Y, not convenient to type directly)
How much is the square of x plus the square of Y?
What I want is the problem-solving process

First, 96 = 3 * 2 * 2 * 2 * 2
And then combined into 12 * 8 = 96
xxy+yyx=xy(x+y)=12*8=2*6*(2+6)=12*8=96
x=2,y=6
xx+yy=2*2+6*6=4+36=40

Every two people who attended a party shook hands once, and all of them shook hands 10 times______ People go to the party

According to the equation, X (x-1) 2 = 10, the solution is X1 = 5, X2 = - 4. A: there are 5 people attending the party. So the answer is: 5

① The scale on the map is 1:20000, and the distance on the map is 5cm, so the actual distance between the two places can be calculated? ② in another map with the scale of 1:10000
What is the distance between AB and AB on the map? (hint: the map is 5cm.)

① The scale on the map is 1:20000, and the distance on the map is 5cm. How about the actual distance between the two places?
5÷1：20000=100000cm=1000m
② On another map with a scale of 1:10000, how many centimeters is the distance between AB and ab? (hint: the map base is 5 cm)
100000*1:10000=10cm
This is the first answer. I wish you progress!

How much is 1063 out of 100 minus 35 out of 8?

101.925

Xiaohua, Xiaojun and Xiaogang took the same amount of money to buy a basket of apples together. When they shared the apples, Xiaohua, Xiaojun had 6 kg more than Xiaogang, so each person gave Xiaogang 10 yuan and asked more than 10 yuan per kg

If you want 6 kg more, Xiaogang should get 6 * 2 / 3 = 4 kg. That is to say, if you distribute apples equally, Xiaogang should get 4 kg more. Now he has returned 20 yuan, so 20 / 4 = 5 yuan per kg of apples. That's it

The twins look as like as two peas. (the same as)

The twins look the same as each other.

A / B is equal to 6, AB is not 0, so what is the greatest common factor and the least common multiple of AB

Because of division, so
Greatest common factor B
The least common multiple is a

A 20 cm long, 15 cm wide and 12 cm deep rectangular water tank has a water depth of 6 cm. After a cube stone is put in, the water depth is 10 cm. What is the volume of the stone?

20 × 15 × (10-6) = 20 × 15 × 4 = 300 × 4 = 1200 (CC). A: the volume of this stone is 1200 CC