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Vedmedyk [2.9K]
3 years ago
7

A safe has a 4-digit lock code that does not include zero as a digit and no digit is repeated. What is the probability

Mathematics
2 answers:
sergeinik [125]3 years ago
8 0

Answer:To find the total number of outcomes for this event, find the permutation of  

⇒ 9 things taken 4 at a time.

The total number of outcomes is  

⇒ 3,024.

The total number of favorable outcomes is a permutation of  

⇒ 4 things taken 4 at a time.

The probability that the lock code consists of all even digits is  

⇒ 24 out of 3,024.

Flura [38]3 years ago
7 0

Answer: 9, 3024, 4, 24

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Can someone please help me with this?
lidiya [134]
The angle formed by two tangles results in half of the difference of the two arcs. 

That is to say 

70 = .5(Major arc - minor arc)

Think of the major arc as the larger and the minor the smaller.

So therefore the difference in the two arcs = 140 (multiplying both sides of the above equation by 2.

140 = major arc - minor arc.

Another necessary idea is that the arc of a whole circle = 360 degrees, that is to say the major arc + minor arc = 360, giving us a second equation to solve.
Assuming x is the minor arc.

140 = major arc - x 
360 = major arc + x

Use linear combination and add these equations to get

500 = 2*major arc

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The answer is 110 degrees.

8 0
3 years ago
Which of the following equations is equivalent to x - y = 8?
matrenka [14]
Say x = 12 and y = 4 
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Number 1
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24 - 16 = 8
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4 0
4 years ago
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What is3\8 +5/2 need help
scoray [572]
3/8 + 5/2
=3/8 + 20/8
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or
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6 0
3 years ago
Which solid has congruent horizontal and vertical cross sections?
Zinaida [17]

Answer:

triangular prism (pyramid) and cylinder.

Step-by-step explanation:

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3 0
3 years ago
This is too much for me <br> if you know please answer
SOVA2 [1]

Answer:

-4x + y + 6z

Step-by-step explanation:

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-4x + y + 6z is your answer.

~

8 0
3 years ago
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