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There are 25 multiple-choice questions in a mathematics paper. If you do one right, you will get 4 points. If you do one wrong, you will get 1 point. A student did all the questions, he said Using the equation, He scored 85 or 86
Let's do the right x questions,
So 4x - (25-x) = 85
The solution is x = 22,
So 4x - (25-x) = 86
The solution is x = 22.2 because x is an integer
So he got 22 questions right
There are only 25 multiple-choice questions in a mathematics test paper. If you do one right question, you will get 4 points. If you do one wrong question, you will get 1 point. Xiao Ming gets 80 points. How many correct questions did he get? How many wrong questions did he get?
25*4=100
4-（-1）=5
Wrong: (100-80) / 5 = 4
Right: 25-4 = 21
1. If the line a is translated so that it passes through a point p outside the line a, there is a line
A / B 2
C 1 D does not exist
C 1
There are only 25 multiple-choice questions in a mathematics test paper. If you do one right, you will get 4 points. If you do one wrong, you will get 1 point. If you do all the papers, you will get 80 points
How many courses did he do correctly? It's 4, 1 and 80
If he does the right x, he does the wrong 25-x
4x-（25-x）=80
x=21
So he did 21 things right and 4 things wrong
4 points for one right question, 1 point for one wrong question, 65 points in total. How many questions are right
24 * 4 = 100 points for all pairs
4 + 1 = 5 points will be deducted for one mistake
So I made a mistake (100-65) △ 5 = 7
Right 25-7 = 18
If a student does 25 math problems, he will get 4 points if he answers one correctly. If he does not answer one wrong, he will get 1 point if he answers one wrong. If he does not do three problems, he will get 73 points. How many problems have he answered correctly
If he answers x questions correctly, he answers (25-3-x) wrong questions. 4x - (25-3-x) = 73x = 19. A: he answers 19 questions correctly
If a student does 25 math problems, he will get 4 points if he answers one correctly. If he does not answer one wrong, he will get 1 point if he answers one wrong. If he does not do three problems, he will get 73 points. How many problems have he answered correctly
If he answers x questions correctly, he answers (25-3-x) wrong questions. 4x - (25-3-x) = 73x = 19. A: he answers 19 questions correctly
Between which two integers is the square root of 12
Solution
Is it √ 12 or the square root of 12
If it is √ 12
Then 3 = √ 9
Can there be an integral part after 481
For example: after the opening of 8, it can be written into 2 radical numbers. After 2481, how much can it be written like the above form?
Please reply today. I'm waiting for an emergency!
481=13*37
Neither of them can be written in the form you said
What is the integral part of the square root of 200?
14 squared = 196
Square of 15 = 225
So the integral part of the square root of 200 = 14
Root of decimal part 200-14
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