Geometry
There exists a triangle that has only one acute angle.
False
What are the roots of the following equation?
(x-2)(x+1)=0
2 and -1
How many flavours does the sports drink PRIME come in?
9
The absolute value function has the shape of ....?
V
We get the length of the hypothenuse of an isosceles right triangle if we divide the length of the leg by root 2.
No, multiply!
The sum of a number and its square is 56. What is this number?
7
Was year 2023 a prime number?
No, it's 7x17x17.
The zero of the function f(x)=2x-4 is in x=...?
Do any three points in the plane determine a triangle?
Collinears don't.
How many roots can a quadratic equation have?
0, 1 or 2
Which year is going to be the next that is a prime number?
2027
Any two linear functions have an intercept. True or false?
Parallels don't.
Is there a quadrilateral that has two pairs of equal sides but is not a parallelogram?
There is. A deltoid.
What do we call the part of the quadratic formula underneath the square root ?
Discriminant
List three two-digit prime numbers that, after reversing its digits, remain a prime.
11,13,17,37,79
We map each person to his/her favourite ice cream flavour(s). Is this mapping a function?
No. (Yes, if...)
In a unit circle, the length of the arc subtended by a 30 degree inscribed angle is Pi/3, Pi/6 or 2Pi?
Pi/3
Which point is the minimun of the following function?
f(x)=3(x-2)2+1
(2;1)
Is 12345678910987654321 a prime number?
Yes
Which quadratic function has a graph that is a U shape, but upside down?
The coefficient of x2 is negative.