There are 60 employees in a company, including 28 male employees. What is the proportion of male employees in the total number of the company? What is the proportion of female employees in the total number of the company What's the percentage of male employees and female employees?

There are 60 employees in a company, including 28 male employees. What is the proportion of male employees in the total number of the company? What is the proportion of female employees in the total number of the company What's the percentage of male employees and female employees?

28÷60=7/15
1-7/15=8/15
A: the number of male employees accounts for 7 / 15 of the total number of the company;
Female employees account for 8 / 15 of the total number of employees in the company

Finding the integer solution of the equation xy-2x-2y + 7

Xy-2x-2y + 7 =? If xy-2x-2y + 7 = 0, then there is: X (Y-2) - 2 (Y-2) + 3 = 0 (Y-2) (X-2) = - 3 = 1 * - 3 = - 1 * 3y-2 = 1, X-2 = - 3 or Y-2 = - 3, X-2 = 1, or Y-2 = 3, X-2 = - 1, or Y-2 = - 1, X-2 = 3. The solutions are: x = - 1, y = 3x = 3, y = - 1x = 1, y = 5x = 5, y = 1, respectively

There are 56 students in class 6 (2). The number of students who reach the sports standard accounts for 7 / 8 of the total number of students in the class. The number of girls who reach the sports standard accounts for 2 / 7 of the total number of students,
How many boys are up to the standard? Thank you. It's urgent!

Number of male students = 56 × 7 / 8-56 × 2 / 7 = 33

Given that real numbers x and y satisfy x2 + y2-4x = 0, then the value range of Y / x + 2 is?

This problem can be combined with figures and figures
x. Y on the circle (X-2) ^ 2 + y ^ 2 = 4
The range Y / (x + 2) = (y-0) / (x - (- 2)) can be regarded as the slope range from a point on a circle to a fixed point (- 2,0)
The range of variation is between two tangent lines
If the tangent point is (x, y), the slope from the tangent point to the fixed point is Y / (x + 2), and the slope from the tangent point to the center of the circle is Y / (X-2)
Multiplication of two slopes = - 1 (radius of tangent perpendicular to tangent point): Y / (x + 2) * y / (X-2) = - 1
Simultaneous solution of equations with circular equations
The solution is x = 1, y = positive and negative root sign 3
So the slope range: - 3 / 3 root sign 3 to 3 / 3 root sign 3
So the value range of Y (x + 2): (- √ 3 / 3, √ 3 / 3)

There are 250 students in Grade 5 of Xiangyang primary school. The number of students in Grade 6 is 9 / 10 of that in Grade 5 and 3 / 4 of that in grade 4. How many students are there in grade 4? How many more students are there in grade 4 than in Grade 5?

250 times 9 / 10 is the sixth grade. Divide this answer by 3 / 4 is the fourth grade

If y = √ x-3 + √ 3-x + 22, find the square root of X + y

y=√x-3+√3-x+22
|x-3≥0
|3-x≥0
The solution is 3 ≥ x ≥ 3
So x = 3, y = √ x-3 + √ 3-x + 22 = 22
√(x+y)=5

The sum of the three numbers of a, B and C is 360. A is three times of B, B is two times of C. what are the numbers of a, B and C?

Number C: 360 △ 1 + 2 + 2 × 3, = 360 △ 9, = 40; number B: 40 × 2 = 80, number A: 80 × 3 = 240. Answer: number a is 240, number B is 80, number C is 40

Decompose the following formulas. Factor (^) means exponent
x^2-6x+9
4a^2+4ab+b^2
-9x^2+12xy-4y^2
a^2+ab+1/4b^2
(2a+b)^2-8(2a++b)+16

x^2-6x+9
=(x-3)^2
4a^2+4ab+b^2
=(2a+b)^2
-9x^2+12xy-4y^2
=-(9x^2-12xy+4y^2)
=-(3x-2y)^2
a^2+ab+1/4b^2
=(a+1/2b)^2
(2a+b)^2-8(2a+b)+16
=(2a+b-4)^2

The greatest common divisor of a and B is 5 and the least common multiple is 120. Now the number a is 40 and the number B is 120______ ．

120 × 5 / 40, = 600 / 40, = 15, answer: B number is 15; so the answer is: 15

(x²-2x)²-6(x²-2x-3/2)
Factorization

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