The answer is B. 120
nCr = n! / ((r! * (n - r)!)
n = 10
r = 3
10C3 = 10! / ((3! * (10 - 3)!)
= 10! / ((3! * 7!)
= (10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1) / (3 * 2 * 1 * 7 * 6 * 5 * 4 * 3 * 2 * 1)
= 3628800 / 30240
= 120
Answer:
OPTION B: 
Step-by-step explanation:
Given 
We know that, 
Multiplying and dividing by 
, we get:
Hence, OPTION B is the answer.
Okay, you now a triangle has 180º degrees and to add to 180º, you have to add all the numbers you have like this:
2x+x+90 (the box is 90º)=180º; add like terms like 2x+x
3x+90=180; cancel 90 by subtracting it and also subtract 90 from 180
3x=90;divide 3 to isolate x and also divide 90/3
x=30 :)
The right answer for the question that is being asked and shown above is that: "1. t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground." the axis of symmetry, and what does it represent is <span>1. t = 1.5; it takes 1.5 seconds to reach the maximum height and 3 seconds to fall back to the ground</span>
