If the area of the square is equal to the area of the isosceles triangle then what is the length of the height of the isosceles triangle, in cm?. No be compared Question 5: The triangle
Trang 1Đề thi Violympic Toán Tiếng Anh lớp 8 vòng 8 năm 2015 - 2016
Question 1: If x3+ 2x2+ kx + 2 is divisible by x - 1 then k = …
Question 2: Given a square with the length of one side is 8 cm and a isosceles triangle
with the length of its base is 12 cm If the area of the square is equal to the area of the isosceles triangle then what is the length of the height of the isosceles triangle, in cm?
A 32/3
B 23/3
C 16/3
D 8/3
Question 3: If x = 2y then
Question 4: Given A = 9x2+ 8 - 12x and B =
To compare A … B
A A > B
B A < B
C A = B
D No be compared
Question 5: The triangle ABC has three bisectors AM, BN, CP of the angles at A, B, C
respectively
Question 6: Given the rectangle ABCD and the triangle BEC Find the value of x such
that the ratio of the area of the rectangle to the area of the triangle BEC is 7:3
Answer: x = cm
Trang 2Question 7: 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
Question 8: The number of the solutions of x4+ x3+ 2x2+ x + 1 = 0 is
Question 9: Three children: Mark, Tom, Andy ate 23 cookies altogether Tom ate more
cookies than Andy, Mark What is the smallest possible number of cookies that Tom ate? Answer: The smallest possible number of cookies that Tom ate is cookies
Question 10: The average of three numbers is 42 All three are whole positive number
and are different from each other
If the least number is 20, what could be the greatest possible number of the remaining two numbers?
Answer:
Trang 3Đáp án đề thi Violympic Toán Tiếng Anh lớp 8 vòng 8 năm 2015 - 2016
Question 1: -5
Question 2: A
Question 3: -3
Question 4: D
Question 5: 1
Question 6: 6 Question 7: 56 Question 8: 0 Question 9: 9 Question 10: 85