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1. ### How do I simplify a combination expression with a variable?

.... So you can reduce this to: kC3 / 10C3 kC3 = k(k-1)(k-2) / 3! 10C3 = 10*9*8 / 3! When you divide, the 3! will cancel out. Answer: k(k-1...

2 Answers · Science & Mathematics · 01/09/2019

2. ### Another word problem, show your work. I JUST NEED HELP HOW TO DO THIS AND TO UNDERSTAND WHAT THE PROBLEM WANTS ME TO DO!?

Work through this example first, to get the basic...a job takes 6 days to do with 10 machines. Suppose the...must have increased by a factor 1/(2/3) = 3/2. The number...

3 Answers · Science & Mathematics · 05/04/2019

3. ### Find the equation of a circle with the points (-1,4) and (7,6) that lie on the circle, and mark the ends of the diameter?

...diameter*. If it didn't say that, there could be infinitely many circles through those two points. Find the coordinates of the midpoint: x_m = (-1 + 7)/2 = 6/2 = 3 y_m = (4 + 6)/2 = 10/2 = 5 So the center of the circle is (3,5) Write the equation...

7 Answers · Science & Mathematics · 07/09/2019

4. ### Repeating or Terminating Decimal Number?

I think reading through the answers gets you to...as prime factors (or is 1), then it terminates. ...not the number itself. 10 has factors of 2 and...

5 Answers · Science & Mathematics · 03/08/2019

5. ### Can you figure out the number of combinations?

...range: N(1, t, s) = 1 . . . if s ≤ t ≤ 10 . . . . . . . = 0 . . . otherwise. When n > 1 there are a few cases to consider... number of sequences that do include at least one s is N(n-1...

1 Answers · Science & Mathematics · 09/10/2019

6. ### What's the probability of an event with 0.3 probability of occuring happenning less than 12 times if tested 36 times?

...solve for this equation where x = 0 through 11 (a total of 12 ... a spreadsheet to do the math for me, I...x) 0 2.65173E-06 1 4.09124E-05 2 0.000306843...058783811 8 0.091324849 9 0.121766465 10 0.140901195 11 0.142731081 ...

2 Answers · Science & Mathematics · 10/06/2019

7. ### Determine a + b + c?

...2 + 7^2 , 6^2 + 8^2 , 7^2 + 8^2 1 + {4 , 9 , 16 , 25 , 36 , 49 , 64} = 5 , 10 , 17 , 26 , 37 , 50 , 65 4...39;s the only combination which does so. 2 + 6 + 9 = 17 EDIT...from having to search through tons of possible answer...

3 Answers · Science & Mathematics · 07/08/2019