Q. There are 30 members of the Young Democrats on a certain college campus. How many ways can a president, secretary and treasurer be elected?
A. 3 choose 30
= 30C3 = 30 x 29 x 28 /3x 2x 1 = 4,060 ways
= 30C3 = 30 x 29 x 28 /3x 2x 1 = 4,060 ways
What is the speed of the 30 ton car relative to the ground?
Q. A 30 ton rail car and a 70ton rail car, initially at rest, are connected together with a giant but massless compressed spring between them. When released, the 30ton car is pushed away at a speed of 4.6 m/s relative to the 70ton car. What is the speed of the 30ton car relative to the ground?
A. 30 x v1 = 70 x v2 and v1 + v2 = 4.6
v1 = ( 70/30) v2 = 2.33 v2
2.33 v2 + v2 = 4.6
v2 = 1.38
v1 = 4.6 - 1.38 = 3.22 m/s ans
v1 = ( 70/30) v2 = 2.33 v2
2.33 v2 + v2 = 4.6
v2 = 1.38
v1 = 4.6 - 1.38 = 3.22 m/s ans
What is a good 30 minute long speech i can use for my Critique assigment?
Q. My critique is on a minimum 30 min long speech, im critiquing nonverbal communication the speaker presents so if you know of any good speeches that i can at least find on youtube to watch myself it would be great. Thanks.
& Seriously if your going to leave a smart remark then don't respond im not here to receive your immature sarcasm.
& Seriously if your going to leave a smart remark then don't respond im not here to receive your immature sarcasm.
A. never heard of a 30 minute long speech. longest i can think of is martin luther king jr's i have a dream speech, which i think is only about half that long. i suppose, depending on how fast you speak, you could drag it out to be a 30 minute long speech.
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