There are 50 students in class one of grade five, including 27 boys. What percentage of the students are male and female? I don't know whether it's 50 / 27 or 27 / 50 One score

There are 50 students in class one of grade five, including 27 boys. What percentage of the students are male and female? I don't know whether it's 50 / 27 or 27 / 50 One score

Male: 27 △ 50 = 27 / 50
Female: (50-27) △ 50 = 23 / 50
2 (A-3) & # - A + 3 is equal to
2(a-3)²-a+3
=2(a-3)²-(a-3)
=(a-3)[2(a-3)-1]
=(a-3)(2a-7)
It's my pleasure to answer the questions for you
Please click the [select as satisfactory answer] button below
2（a-3）²-a+3
=2（a-3）²-（a-3）
=（a-3）（2(a-3)-1）
=(a-3)(2a-7)
2（a-3）²-a+3
=2（a-3）²-(a-3)
=（a-3）[2(a-3)-1]
=(a-3）[2a-6-1]
=(A-3) [2a-7] if it's a factorial, that's it
=2a^2-7a-6a+21
=2A ^ 2-13a + 21 if it's the result, write this step.
There are 27 boys and 18 girls in class 62. What percentage of boys are girls?
18/27=2/3
|3tan30°-1|-4（sin²60°-1）+∫2×cos45°
|3tan30°-1|-4（sin²60°-1）+∫2×cos45°
=|√ 3-1|-4（3/4 -1）+∫2×√ 2 /2
=√ 3 -1-3 +4+1
=√ 3 +1
It is known that there are 27 boys in class 51, and there are 7 girls less than boys. The number of girls is a fraction of the number of boys. The number of boys accounts for a fraction of the total number of the class
There are 27-7 girls = 20
Girls are 20 / 27 of boys
Class size 27 + 20 = 47
The number of male students in the class is 27 / 47 = 27 / 47
Cos ^ 245 ° + 1 / 2tan 45 ° - Tan 60 ° of Tan 30 ° - Sin 60 °
cos^245°=0.5
1/2tan45°=0.5
-Tan30 = - 3
Sin60 = root 3 / 2
Original = - 2 + 3 / 2 under radical
(√2/2)^2+1/2*1-(√3/3)/√3-√3/2
=1/2+1/2-1/3-√3/2=2/3-√3/2
There are 27 students in class 5 (2). There are 7 less girls than boys. What is the percentage of girls than boys?
Girls (27-7) △ 2
Boys can add 7
That's 10 girls and 17 boys
Girls are 10 out of 17 boys
Cube of X + square of X + x = - 1 x =?
Simple. Extract x ^ 2 from the right side of the equal sign, but only the two terms with the highest number of times. Then extract x + 1. An equation will appear
There are 24 boys and 36 girls in a class? What's the percentage of girls in the class?
The number of boys is the number of girls: 24 △ 36 = 23; the number of girls is the number of the whole class: 36 △ (24 + 36) = 36 △ 60, = 35; answer: the number of boys is 23 of the number of girls; the number of girls is 35 of the number of the whole class
If the square of x = (- 6), then (x-1) is cubic=
25 or 49
25 or 49
25. Follow up answer: 49