there were 550 students who participated in a quiz of 5 math problems, and 2011 problems were solved correctly in all. it is found out that every participant solved correctly at least 1 problem. it also know that 59 students got 1 problem correct, 69 students were able to answer all problem correctly while the number of students who 2 correct and 3 correct answer were the same. how many of the students got 4 correct answers
A parent to class teachers asked that "his class how many students?" The teacher replied that "if in addition to all of my students have and then add one-half of my game and then add 1/4 of my game and finally added his son again, there are all 100 children. Question is how many of the students?
In semester I, the number of good students in class 6D was equal to 2/7 of the remaining students. Into semester II, the number of good students increased by 8 students ( the number of students of the class was unchanged), so the number of good students became 2/3 of the rest. How many good students of class 6D were there in semester I ?
Ai làm nhanh mà đúng, mình tích cho !
In a competitive exam, there are 50 questions. Students can score 3 marks for each correct answer while 2 marks are subtracted for each incorrect answer. If Mary answered 18 questions correctly, how many marks did she get?
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 the text, and answer the questions
The Royal Ballet School, London
There are only 25 places for the new students every school year. Students are from 11 to 16 years old, and there are boys and girls. It''s a bording school.
On weekdays, there are four hours of lessons and two hours of ballets.In th evening, they watch TV at school. At the weekends, there are dance classes on Saturday mornings, and then they are free with their friends at school
1. How old are students ?
.......................................................
2. Are there 25 students at the school ?
.......................................................
3. Are they only boys at school ?
.........................................................
4. How many hours of lessons are there on weekday ?
.........................................................
5. How about hours of ballets ?
............................................
6.Are there dance classes on Saturdays ?
...................................................
7. Are the students free on Sundy ?
......................................
8. Are there at home in the evening ?
The teacher has 12 cards of number 1 to 12 and gives to 6 students
randomly.
Each student receives 2 cards, then tells students in the class the sum of 2
numbers on cards to examine whether or not the sum is a prime number.
Surprisingly, all of the 6 sums are prime numbers.
What is the sum of these 6 prime numbers from the 6 students?
giúp mình câu này với
Câu 1:
If Juan spent of his money on a game that costs 20 dollar, how much did Juan have originally to spend?
Use the diagram below to reason the answer.
Answer: dollar.
Câu 2:
If you make the 8000km trip, about how much would it cost at today's prices of 3.00 dollar per liter of gas when your car gets 25km per liter?
Answer: dollar.
Câu 3:
A farmer plants 450 seeds per row in his field. How many FULL ROWS would he be able to plant with 50000 seeds?
Answer:
Câu 4:
How many apples would you get from the 10th tree if a farmer notices a pattern from picking the apples on the 1st through the 10th tree. He picked 4 from the first tree, 7 from the second tree and 10 from the third tree.
Answer:
Câu 5:
The 112 4-grade students at Edgemont School donate pennies to raise 75 dollar for a local charity. What is the minimum number of pennies each student needs to bring if they are to meet their goal of collecting 75 dollar?
(1 dollar = 100 pennies)
Answer: pennies.
Câu 6:
Examining the operation of how to use the number of days to find the number of beans in a classroom jar is shown the table. On day 31, how many beans would be in the jar?
Answer: beans.
Câu 7:
If and , what is the value of ?
Answer:
Câu 8:
What is the value of the following expression: ?
Answer:
Câu 9:
Calculate:
.
Câu 10:
What is the next number in the pattern: 1, 8, 27, ...?
Answer:
Nộp bài
A survey was conducted on 100 students in beginning of the year. The findings are as follows:
56 students liked Mathematics
38 students liked English
52 students liked Science
6 students liked both Mathematics and English
4 students liked both English and Science
12 students liked all the three subjects
(a) How many students liked both Mathematics and Science?
(b) How many students liked only Mathematics?
âu 1:
If Juan spent of his money on a game that costs 20 dollar, how much did Juan have originally to spend?
Use the diagram below to reason the answer.
Answer: dollar.
Câu 2:
Mathematician Sophie Germain worked with codes and mathematics. If each letter of the alphabet is assigned a number starting with A = 1, B = 2, etc., the values of the letters in the alphabet will start to look like this:
If your code is sum of the letter values, what is the value of "MATH" ?
Answer:
Câu 3:
It takes Abby twice as long as Blair and half as long as Caitlin to ride her bike to school. If it takes Blair 10 minutes to ride her bike to school, how long does it take Caitlin to go to school?
Answer: minutes.
Câu 4:
If you make the 8000km trip, about how much would it cost at today's prices of 3.00 dollar per liter of gas when your car gets 25km per liter?
Answer: dollar.
Câu 5:
Examining the operation of how to use the number of days to find the number of beans in a classroom jar is shown the table. On day 31, how many beans would be in the jar?
Answer: beans.
Câu 6:
The 112 4-grade students at Edgemont School donate pennies to raise 75 dollar for a local charity. What is the minimum number of pennies each student needs to bring if they are to meet their goal of collecting 75 dollar?
(1 dollar = 100 pennies)
Answer: pennies.
Câu 7:
What is the value of the following expression: ?
Answer:
Câu 8:
Your school is having a canned food drive for Harvesters. How many total cans would you have if you made a solid pyramid with cans on the first level, on the second level and continue the pattern all the way up to just one can on top?
Answer: cans.
Câu 9:
What is the next number in the pattern: 1, 8, 27, ...?
Answer:
Câu 10:
If your parents give you one penny on Day 1, 2 pennies on Day 2, 4 pennies on Day 3, 8 pennies on Day 4. If the pattern continues, how many pennies will your parents give you on Day 15?
Answer: pennies.
