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Lilit [14]
3 years ago
11

From a group of 21 astronauts that includes 12 people with previous experience in space flight, a 3-person crew is to be selecte

d so that exactly 1 person in the crew has previous experience in space flight. How many different crews of this type are possible?
Mathematics
1 answer:
Vladimir79 [104]3 years ago
8 0

Answer:

3

Step-by-step explanation:

because  

You might be interested in
Zeek then want to ride his bike to the old spaghetti factory. He wondering if he should bike 1 mile north, then 0.5 miles direct
frosja888 [35]

Answer:

He should travel directly

Step-by-step explanation:

Given

x = 0.5 --- East

y =1 --- North

If he goes through east north direction, the distance (d) traveled is:

d = x + y

d = 0.5 + 1

d = 1.5 mile

If he travels directly, the distance (d) is:

d = \sqrt{x^2 + y^2} ---- Pythagoras theorem

d = \sqrt{0.5^2 + 1^2}

d = \sqrt{0.25 + 1}

d = \sqrt{1.25}

d = 1.12mile

By comparison, he will travel the shortest distance if he travels directly because 1.12 < 1.5

<em>Hence, he should travel directly</em>

6 0
3 years ago
Don't need an answer anymore :[
sergeinik [125]

Answer:

why.

what question was it

5 0
3 years ago
A number cube has sides labeled 1 to 6. Connie rolls the number cube 12 times She rolls a 5
Otrada [13]

¹/24

Step-by-step explanation:

The number of favorable outcomes (rolling a 5) is 3

The total number of possible outcomes is 12 * 6 = 72

Therefore;

P(5) = 3/72

= 1/24

7 0
3 years ago
What is the answer to number 23
attashe74 [19]

The answer is 50/27 or 1 23/27 or approx 1.85185. Here is my work!

Multiply both sides by 10 : 20x + 6x = 50 - x

Collect the like terms: 20x + 6x = 50 - x

Move Variable to Left: 26x + x = 50

Collect like terms: 27x = 50

Divide both sides by 27: 50/27

Hope this helped :))

6 0
3 years ago
Determine the slope of the line passing through the following points. (0,-6) and (2,4)
grin007 [14]

Answer:

736-39+78=

Step-by-step explanation:

736-39+78=

8 0
3 years ago
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