The number of male workers is four fifths of the number of female workers. What is the proportion of female workers in the number of male workers?

The number of male workers is four fifths of the number of female workers. What is the proportion of female workers in the number of male workers?

If the number of male workers is 4 / 5 of that of female workers, then the number of female workers accounts for 5 / 4 of that of male workers

It is known that the quadratic cubic KX ^ 2-2x + 1 can be factorized in the range of real number, then the value range of K. why K

It is known that the quadratic cubic KX ^ 2-2x + 1 can be factorized in the range of real numbers
And the discriminant = 2 ^ 2-4k ≥ 0
Ψ K ≠ 0 and K ≤ 1
∴ k

The school held the "June 1" male and female chorus. Originally, the number of female students in the chorus accounted for 40% of the total number of the chorus. Later, considering the chorus effect, five female students were replaced by five male students. At this time, the ratio of female students to male students was 3:7. How many male and female students were there in the chorus?

If the ratio of girls to boys is 3:7, then the proportion of girls in the total number: 33 + 7 = 310; 5 (40% - 310), = 5 (110), = 50 (people); a: there are 50 boys and girls in the chorus

Factorization of (x2-3x) 2-2 (x2-3x) - 8

piao86114,
（X²－3X）²－2（X²－3X）－8
＝（X²－3X－4）（X²－3X＋2）
＝（X－4）（X＋1）（X－2）（X－1）
＝（X－4）（X－2）（X－1）（X＋1）

There are 325 male and female students in a certain grade. In the new school year, there are 25 male students and 5 female students. The total number of students increases by 16______ People

325 - (25-16) △ 5% + 25 = 325-9 △ 5% + 25, = 325-180 + 25, = 170 (people); answer: now there are 170 boys. So the answer is: 170

Given 5x-3y + 2 = 0, find the value of 10 ^ 5x △ 10 ^ 3Y!

5x-3y=-2 10^5x÷10^3y =10^(5x-3y) =10^(-2) =1/100 =0.01

The number a is 120, 30 more than the number B, and how many percent more than the number B?

30/（120-30）=1/3=33.33/100
The number of a is 33.33 percent higher than that of B

What is a nonnegative number

0 and positive numbers

The ratio of the three numbers of a, B and C is one to two to three, and their average is 30, so the number of B is 30

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30×3×2/（1+2+3）
=30
The number B is 30
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The length of the long right side of a right triangle is 10 cm more than twice that of the short right side, and the length of the hypotenuse is 25 cm

Let the length of the shorter right side be xcm, then the length of the other right side be (2x + 10) cm. According to the Pythagorean theorem, it is obtained that x2 + (2x + 10) 2 = 252. The solution is X1 = 7, x, 2 = - 15. Then 2x + 10 = 24. Then the area of the right triangle is 12 × 7 × 24 = 84cm2. Therefore, the area of the right triangle is 84cm2