Thread: Short math quiz for Waffles invite

It's simple: answer all (or some of) the questions and PM me the answers. The deadline is the 12th of February. The person that has answered the most questions correctly on the 12th of February will receive a Waffles invite. If there is a tie, then there will be a tiebreaker. If, at any time, someone answers 8 of the questions correctly, then the waffles invite is his.
No cheating! I know the answers, and I may ask for work.
Good Luck!

1) For any cube, if the volume is V cubic inches and the surface area is A square inches, then V is directly proportional to which of the following?
(A) A
(B) A²
(C) A³
(D) A^2/3
(E) A^3/2

2) For all x, let the function f be defined by f(x)=a(x-h)²+k, where a, h, and k are constants. If a and k are positive, which of the following CANNOT be true?
(A) f(10)=1
(B) f(0)=-5
(C) f(0)=5
(D) f(1)=-h
(E) f(-1)=h

3) A list consists of 14 consecutive positive integers. Which of the following could be the number of integers in the list that are divisible by 13?

I.None
II.One
III.Two

(A) I only
(B) II only
(C) I and II only
(D) II and III only
(E) I, II, and III

4) The product of a and b is equal to x, and the sum of a and b is equal to y. If x and y are positive numbers, what is (1/a)+(1/b) in terms of x and y?
(A) (x/y)
(B) (y/x)
(C) xy
(D) (1/x)+(1/y)
(E) 1/(x+y)

5) When the area of a certain circle is divided by pi, the result is the square of an integer. Which of the following could be the diameter of the circle?
(A) 12
(B) 11
(C) 9
(D) 7
(E) 5

6) If x>0, then 2 percent of 5 percent of 3x equals what percent of x?
(A) 0.03%
(B) 0.3%
(C) 0.6%
(D) 3%
(E) 6%

7) The positive number n is the product of three different prime numbers greater than 2. If the sum of these three prime numbers is also prime, what is the smallest possible value for n?

________

8) A grocery customer spent a total of $9.60 for ground beef and coffee. The coffee cost 2 times as much per pound as the ground beef, and the customer bought 3 times as many pounds of ground beef as pounds of coffee. How much, in dollars, did the customer spend on coffee?
___________

9) For nonzero numbers w, x, and y, if x is twice y and y is (1/3) of w, what is the ratio of w² to x²?
(A) 2 to 3
(B) 4 to 9
(C) 3 to 2
(D) 9 to 4
(E) 9 to 16

10. In the xy-plane, line l passes though the point (0,1) and is parallel to the line with equation 2x+3y=6. If the equation of the line l is y=ax+b, what is the value of a+b?



__________

1: E
2:B
3:D
4:B
5:A
6:B
7:385
8: 8.22$
9:D
10: 1/3

2: D and E are correct. Didn't see it until now. a=0,01 h=-9 x=1 k=4 gives us: 0,01*((1-(-9))^2)+4= 0,01*100+4=5+4=9 = -(-h) For E, make h=-10 and k=5 I think, same story tho.
I'm getting tired now, I'll probably only make more mistakes.

Originally Posted by TheGiver

1: E
2:B
3:D
4:B
5:A
6:B
7:385
8: 8.22$
9:D
10: 1/3

2: D and E are correct. Didn't see it until now. a=0,01 h=-9 x=1 k=4 gives us: 0,01*((1-(-9))^2)+4= 0,01*100+4=5+4=9 = -(-h) For E, make h=-10 and k=5 I think, same story tho.
I'm getting tired now, I'll probably only make more mistakes.

congratz, you got 8 out of 10 right, which means you won the Waffles invite! Pm me your email :)

You missed #7. The correct answer is 165 (The numbers were 3,5,11).
The correct answer to #8 is $3.84 (C+3((1/2)C)=9.6)

This thread can now be closed.

I was always bad at maths and seems to follow me everywhere.

This GA needs to be closed. OP is banned.

WHY? People can solve it. It can be helpful to others.

Its a giveaway and its already been solved. And the poster has been banned. I love Fred from Angel BTW lol