The number of the value of x such that x-3/x is the integer number.
Answer: number(s).
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The number of the value of x such that x-3/x is the integer number. Answer:...... number(s).
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Find the least integer number x such that 4/x-3 is the integer number.
The number of values of x such that \(\frac{\sqrt{x}+1}{\sqrt{x}-3}\) is an integer is
Để \(\frac{\sqrt{x}+1}{\sqrt{x}-3}\in Z\)
=> \(\sqrt{x}\)+ 1 chia hết cho \(\sqrt{x}\)- 3
=> \(\sqrt{x}\)- 3 + 4 chia hết cho \(\sqrt{x}\) - 3
=> 4 chia hết cho \(\sqrt{x}\)- 3
=> \(\sqrt{x}\)- 3 thuộc Ư(4) = {1 ; -1 ; 2 ; -2 ; 4 ; -4}
Ta có bảng sau :
| \(\sqrt{x}\)- 3 | 1 | -1 | 2 | -2 | 3 | -3 |
| x | 2 | vô tỉ | vô tỉ | 1 | vô tỉ | 0 |
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Question 2:The number of factors of 120 isQuestion 5:Find four integer numbers a,b,c,d such thata + b + c + d 1a + c + d 2a + b + d 3a + b + c 4Answer: (a;b;c;d)() Question 6:The 215th term of the expression A1-7+13-19+25-31+⋯ isQuestion 7:A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number isQuestion 8:Calculate: 1×2+2×3+⋯+100×101Question 9:The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)5750 is xQuestion 10:The sum of di...
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Question 2:
The number of factors of 120 is
Question 5:
Find four integer numbers a,b,c,d such that
a + b + c + d = 1
a + c + d = 2
a + b + d = 3
a + b + c = 4
Answer: (a;b;c;d)=()
Question 6:
The 215th term of the expression A=1-7+13-19+25-31+⋯ is
Question 7:
A natural number will be increased by 9 times ifthe digit 0 is written between tens digit and units digit.The number is
Question 8:
Calculate: 1×2+2×3+⋯+100×101=
Question 9:
The root of the equation (x+1)+(x+2)+(x+3)+⋯+(x+100)=5750 is x=
Question 10:
The sum of digits of 31000 is A,the sum of digits of A is B,and the sum of digits of B is C.The value of C is
2: Ước của 120 là:
{1;2;3;4;5;6;8;10;12;15;20;24;30;40;60;120}
9: x+ (1+2+3+4+...+100) = 5750
x + 5050= 5750
x = 5750 - 5050 = 700
6. Chữ số thứ 215 là 1285
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cau 2 la co 16 uoc
cau 5 a=7 b=-1 c=-2 d=-3
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Câu 6:
The number of values of such that
is an integer is
Exam number 3Fill in the blank with the suitable numberQuestion 1:The sum of two numbers is 98 and their difference is 24. The greater number is Question 2:Fill missing number in the blank41165+2304223042+Question 3:Fill missing number in the blank (32514+16257)+23459+(16257+23459)Question 4:Calculate: 91625 – 27356 Question 5:If a square has one side’s length is 12cm then its perimeter is cmQuestion 6:If the perimeter of a square is 104m then its one side’s length is mQuestion 7:Find x such tha...
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Exam number 3
Fill in the blank with the suitable number
Question 1:
The sum of two numbers is 98 and their difference is 24. The greater number is
Question 2:
Fill missing number in the blank
41165+23042=23042+
Question 3:
Fill missing number in the blank
(32514+16257)+23459=+(16257+23459)
Question 4:
Calculate: 91625 – 27356=
Question 5:
If a square has one side’s length is 12cm then its perimeter is cm
Question 6:
If the perimeter of a square is 104m then its one side’s length is m
Question 7:
Find x such that x+24360=41256
Answer: x=
Question 8:
Find y such that y – 12358=18031
Answer: y=
Question 9:
Find the value of n such that
Answer: n=
Question 10:
Find the value of b such that
Answer: b=
find the smallest positive integer k for which \(\sqrt{6075\cdot k}\) is a whole number
Answer : the smallest positive integer k is ......
2. find the value of k such that the remainder is the greatest
k/13= 11Rx
K=
Mary writes down a three-digit number. William copies her number twice in a row to
form a six-digit number. When William’s number is divided by the square of Mary’s
number, the answer is an integer. What is the value of this integer?
1 How many triples of integers (a,b,c) are there such that
?
2
ABC and RTS are similar triangles.
The value of x is 3 The sum of 2 positive integer numbers is greater than their product if the smaller number is
2) Vì ABC và RTS là 2 tam giác đồng dạng nên:
\(\frac{AB}{RT}=\frac{BC}{TS}\Leftrightarrow\left(\frac{8}{4}\right)=\frac{x}{5}\Rightarrow x=10\)
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