A survey showed that of 120 secondary stuents :52 of them have a dog , 31 of them has a cat , and 19 have both. How many of 120 stuedents have neither a dog nor a cat
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A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.
How many of the 120 students have neither a dog nor a cat?
There are 18 students have neither a dog or a cat
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A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.
How many of the 120 students have neither a dog nor a cat?
Answer: ........ students.
goi so hoc sinh chi co cho la:a
goi so hoc sinh chi co meo la:b
Theo bai ra, ta co:
\(\left\{\begin{matrix}a+19=52\\b+19=31\end{matrix}\right.\Leftrightarrow\left\{\begin{matrix}a=33\\b=12\end{matrix}\right.\)
\(\Rightarrow\)so hoc sinh co cho hoac meo hoac ca hai la: 33+12+19=64
so hoc sinh khong co ca cho lan meo la: 120-64=56(hs)
neu minh sai cho nao thi ban noi cho minh biet nha
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Toán tiếng Anh : A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.
How many of the 120 students have neither a dog nor a cat? Answer: {} students
Toán tiếng Anh : A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.
How many of the 120 students have neither a dog nor a cat? Answer: {} students
Toán tiếng Anh : A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.
How many of the 120 students have neither a dog nor a cat? Answer: {} students
A survey showed that of 120 secondary school students: 52 of them have a dog, 31 of them have a cat and 19 of them have both.How many of the 120 students have neither a dog nor a cat ?
toan quoc te nhaQuestion 1:There are two parallel lines in the figure. What is the value of x? Answer: x Question 2:ABC and RTS are similar triangles.The value of x is Question 3:If x0 and 5x+8+|3x|0 then xQuestion 4:I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?Answer: Question 5:How many triples of integers (a,b,c) are there such that ? Answer: triples.Question 6:Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a cat. T...
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toan quoc te nha
Question 1:
There are two parallel lines in the figure. What is the value of x?
Answer: x =
Question 2:
ABC and RTS are similar triangles.
The value of x is
Question 3:
If x<0 and 5x+8+|3x|=0 then x=
Question 4:
I am a multiple of 70 between 400 and 600. My tens digit is odd. Who am I?
Answer:
Question 5:
How many triples of integers (a,b,c) are there such that
?
Answer: triples.
Question 6:
Each of the 37 students in the grade 8 at a school has one dog or one cat or both a dog and a cat. Twenty students have a dog and 24 students have a cat.
How many students have both a dog and a cat?
Answer: students.
Question 7:
The sum of 2 positive integer numbers is greater than their product if the smaller number is
Question 8:
How many different real numbers satisfy the following equation?
Answer:
Question 9:
The area of trapezoid ABCD is 180 .The altitude is 8 cm,AD is 10 cm,and BC is 17 cm.
What is AB,in centimeters?
Answer: cm.
Question 10:
There are 115 cars in a village of 26 families. Each family has either 4 or 5 cars.
How many families have 4 cars?
Answer: families.
Read and write.
Hi! My name is Nam. I have a lot of pets. This is my cat. It is on the bed. And that is my dog. It is there, under the table. I also have two parrots and a rabbit. They are all in the garden.
Nam has a lot of ________.
Read and write.
Hi! My name is Nam. I have a lot of pets. This is my cat. It is on the bed. And that is my dog. It is there, under the table. I also have two parrots and a rabbit. They are all in the garden.
He has two _______ and a _________. They are in the _________.
He has two parrots and a rabbit. They are in the garden.
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