I'm trying to help my son solve a extra credit math problem, but am coming up totally stumped. Looking for some mathematicians to give some guidance here. I'm sorry about the formatting , but I haven't figured out a way to get it any better. L=Left R =Right * = the # that needs to be solved for. The dashed lines is my attempt to seperate the combinations. There are nine 3 digit combinations. Here's the problem.
The athletes training for the marathon all have combination locks on their lockers. Find the secret to figuring out the missing numbers for all of the combinations. Look carefully.
L R L--- L R L--- L R L---
12 9 5--- 7 8 *--- 11 * 6---
L R L--- L R L--- L R L---
10 5 *--- 4 16 *--- 3 * 18---
L R L--- L R L--- L R L---
8 9 *--- 2 14 *---- 13 7 *----
What numbers are missing from each combination. What is the secret, for all of them.
Any help will be much appreciated.
2007-08-31 11:45:16 · 4 answers · asked by nickfromct 3 in Science & Mathematics ➔ Mathematics
Jeff U: You are correct on all your observations.
2007-08-31 12:10:34 · update #1
If anyone wants an excel version of this problem, please email me. Thank you.
2007-08-31 12:15:22 · update #2
Mom, if you want your son to be an all around wuz, keep trying to get us to do his homework. Otherwise, let him be responsible for his work.
2007-08-31 11:51:17 · answer #1 · answered by cattbarf 7 · 1⤊ 2⤋
Hello
I am having a very hard time reading the numbers.
How high can a combination be.
So is the first LRL 12 9 5?
Is the middle LRL in the middle row: 4 16 *?
Also in the last row: 2 14 *? and 13 7 *?
I need clarification.
Thanks
2007-08-31 12:05:48 · answer #2 · answered by Jeff U 4 · 0⤊ 0⤋
I'm assuming this is about the area of a circle, which the formula for is pi x (r squared). Pi is usually figured as 3.14, so it's just 3.14 times the square of the radius, which means that increasing the radius of the circle will also increase the area of a circle. If you already know the area of a circle, to get the radius, you would first divide the area by 3.14, and the radius will be the square root of whatever remains. For example, if you were given a radius of 3 cm, the square of that would be 9 cm squared, and the area would be 9 cm squared x 3.14. You just turn the equation around to do it in reverse and get the radius.
2016-04-02 09:35:57 · answer #3 · answered by Pamela 4 · 0⤊ 0⤋
what are them lines in between?
2007-08-31 11:50:18 · answer #4 · answered by Dragon'sFire 6 · 0⤊ 0⤋