Xiao Hong's temperature is 39 degrees, and the desk angle is 90 degrees. This month spent 72 degrees of electricity, Baijiu's degree is 40 degrees. What's the difference between these four degrees? What kind of quantity do they represent?

Body temperature is a variable, 90 is a constant, 72 is a variable, 40 is a constant
Body temperature 39 ℃
The angle of the desk is 90 degrees
72 kWh (energy unit = 1000 W * h)
Baijiu 40 degrees (alcohol content 40%)

The body temperature is 39 degrees; the desk angle is 90 degrees; 72 degrees electricity; Baijiu is 40 degrees. What are the differences between these four degrees? What are their respective expressions?

Temperature, angle, 72 degree electricity refers to the amount of electricity consumed (KWH), the concentration of alcohol

Body temperature is 39 degrees; desk angle is 90 degrees; 72 degrees electricity is used; Baijiu is 40 degrees. What is the difference between these four degrees? What is the amount?

1 ℃ temperature
2 angle
3 electric energy
4 concentration

There is a wrong operation sign in quarter / seven sixths * five fifths / three eighths * seven fifths = eight fifths. The correct formula is ()

1 / 4 / 7 / 6 / 5 / 3 / 8 * 7 / 5 = 8 / 25
(1/4)/(7/6)/(5/2)/(3/8)(7/5)=8/25
The denominator of the answer is 25, so the division sign should be in front of 5 / 2, and then check it

There is a wrong operation symbol in the formula: 1 / 4 ／ 7 / 6 × 5 / 2 ／ 3 / 8 × 7 / 5 = 8 / 25
The more detailed the better

1 / 4 / 6 / 6 / 5 / 8 × 7 / 5 = 8 / 25
Because the result is that the denominator is 25 = 5 * 5, in the formula on the left side of the equal sign, there should be two fractions with both denominators of 5 multiplied by each other. Change the * in front of 5 / 2 to ÷

Add 3 to a number, subtract 4, multiply by 5, divide by 10, the result is 20. What's the number? How to establish the formula?

There are many wonderful and interesting phenomena in natural numbers, and many secrets are waiting for us to explore. For example, write a number you like, multiply it by 2, add 2, multiply the result by 5, subtract 10, and divide by 10, and you will get the original number again. Please use the formula containing n to express it

According to the meaning of the title: [5 (2n + 2) - 10] △ 10 = (10N + 10-10) △ 10 = 10N △ 10 = n

If a + B = 40, a divided by B = two-thirds, a = () B = ()

A=（16 ）B=(24 )

() 0 divided by () 4 equals 15

210/14
360/24
510/34
660/44
810/54
960/64

1 divided by (1 / 20 + 1 / 30) =?

1 divided by (1 / 20 + 1 / 30)
=1 ÷ (3 / 60 + 2 / 60)
=1 ÷ (5 / 60)
=1 / 12
=12

Xiao Hong's temperature is 39 degrees, and the desk angle is 90 degrees. This month spent 72 degrees of electricity, Baijiu's degree is 40 degrees. What's the difference between these four degrees? What kind of quantity do they represent?