I have an upcoming math competition and need as much practice as i can get. come on.... bring it on, see if there is anyone out there who has an equation, math question, etc. that i cannot answer. leave your email, so i can see if i am right. (P>S>you have to actually know the answer your self) Thank you in advance everybody, i just have to win this competition. *;-)
2007-01-02 17:31:26 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
If you go to my profile, you'll find my e-mail link... I still have no idea on the level of this competition but try these:
1) If May 7, 1983 is a Saturday, what day of the week was May 7, 1883.
2) Ten balls numbered 1, 2, 3, ..., 10 are in a container. If two are drawn at random without replacement, what is the probability that the sum is greater than or equal to ten?
3) Thirty ladies enter a local tennis tournament. At any single match, the loser is immediately eliminated, but the winner goes on to play in later matches until one person is left unbeaten. Assuming that there are no ties, how many different matches must be held to determine the winner?
4) The sum of five consecutive odd numbers is a perfect square. The smallest such case is 1,3,5,7,9. What is the smallest odd number in the set of five for the next larger case?
5) Find the area of the inscribed circle of an equilateral triangle whose perimeter is 36.
6) Solve for x to the nearest ten thousandth of a unit:
3024 = 4198 * (10)^(3x+1)
7) Find the sum of the digits of the largest odd natural number which is a factor of 15!
8) There are twenty people to be seated around a round table. What is the probability that Lisa and Cheryl will be seated next to each other if places are drawn at random?
9) Given points A(0,0) and B(5,0), find the coordinates of a point C in the first quadrant so that ABC is equilateral.
10) Let r, s and t be the roots of p(x) = x^3 - 8x - 5. Find the numerical value of (r+1)(s+1)(t+1).
11) If 8x^9 + 7x^8 - 4x^7 + 3x^6 + 2x^5 - 9x^4 + 5x^3 + 2x^2 - 3x + 7 is multiplied by x² + x + 1, what is the sum of the coefficients of the resulting polynomial?
12) A three-digit number abc has the property that 9 is a factor of the sum of its digits while the sum of the squares of the digits has a remainder of 5 when divided by 9. What is the remainder when a*b + b*c + c*a is divided by 9?
13) Given that z = sqrt(2 * sqrt(3 * sqrt(2 * sqrt(3 * sqrt(2 * sqrt... )))) repeated indefinitely, express z in the form nth root of k, where k and n are natural numbers.
14) If one is given a choice between one pound of $10 gold coins and one-half pound of $20 gold coins, which should you choose? Explain.
15) A rope over the top of a fence has the same length on each side. The rope weighs 1/3 pound per foot. On one end hangs a monkey holding a banana and on the other hangs a weight equal to the weight of the monkey. The banana weighs 2 ounces per inch. The rope is as long, in feet, as the age of the monkey and the weight of the monkey (in ounces) is as much as the age of the monkey's mother. The combined ages of the monkey and his mother are 30 years. Half the weight of the monkey plus the weight of the banana is 1/4 as much as the weight of the weight and the weight of the rope. The monkey's mother is half as old as the monkey will be when it is 3 times as old as its mother was when she was 1/2 as old as the monkey will be when it is as old as its mother will be when she is 4 times as old as the monkey was when it was twice as old as its mother was when she was 1/3 as old as the monkey was when it was as old as its mother was when she was 3 times as old as the monkey was when it was 1/4 as old as it is now. How long is the banana?
2007-01-02 17:53:39 · answer #1 · answered by Puzzling 7 · 2⤊ 0⤋
Math is a tough subject to learn, especially online. Try getting a one on one help session with your teacher. I personally have alot of trouble with Math but what I learned is that If I concentrate and ask ALOT of questions in class then you'll learn it. Then do the homework and ask about it the next day. Vocabulary is a huge thing in math to, so try studying in that. Follow these guide lines and you'll totally get it.
2016-03-14 00:55:38 · answer #2 · answered by Anonymous · 0⤊ 0⤋
how many points in common can a line and a parabole have at most ?
1) 1
2) 2
3) 3
4) 4
etc
0) dont know
2007-01-02 18:22:59 · answer #3 · answered by gjmb1960 7 · 0⤊ 0⤋
Give an example of trees which is not determined by spectrum of adjacency matrix and has more than 12 nodes.
$sara_7852@yahoo.com$
2007-01-02 20:52:19 · answer #4 · answered by sara_7852 2 · 0⤊ 0⤋
Triangle ABC has coordinates A(-6,2), B(-3,6), and C(5,0). Find the perimeter of the triangle. Express your?
2016-06-08 17:57:19 · answer #5 · answered by monir 1 · 0⤊ 0⤋