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Phoenix [80]
3 years ago
13

Trying to understand this

Mathematics
1 answer:
velikii [3]3 years ago
3 0
1 represent 3 days , 2 represent 6 days , 3 represent 9 days , and 4 represent 12 days
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For all integers n, if n2 is odd, then n is odd. Use a proof by contraposition, as in Lemma 1.1.
Mumz [18]
<span>contraP is to flip and negate the prepositions right? if A then B, if -B then -A

Can I have Brainlest please?

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5 0
3 years ago
A basketball court is a rectangle. If a court measures 60 feet by 40 feet, what is the length of the diagonal from one corner of
alexdok [17]
Pythagorean theorem: a²+b²=c²
Where c = length of the hypotenuse (diagonal of a triangle)

60²+40²=c²
3600+1600=c²
5200=c²
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3 0
3 years ago
a cafe sells a regular cup of coffee for $1 and a large sup for $1.50. melissa and her friend buy 5 cups of coffee and spend a t
Natalija [7]

Answer:

65

Step-by-step explanation:

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3 0
2 years ago
A standard deck has 52 cards consisting of 26 black and 26 red cards. Three cards are dealt from a shuffled deck without replace
Allisa [31]

They aren't independent since the probability uses all the cards in the deck

So at the first deal we have the chance of 26/52 of getting a red card, at the second deal we have the chance of a 25/51 of getting another red card, so they aren't independent

8 0
3 years ago
Most ATM’s require a 4-digit code using the digits 0-9 how many 4-digit codes can you use
Zolol [24]

10000 digits can be used for 4 digit A.T.M code.

<u>Solution:</u>

Given that A.T.M required 4 digit codes using the digits 0 to 9.  

Need to determine how many four digit code can be used.

We are assuming that number starting with 0 are also valid ATM codes that means 0789 , 0089 , 0006 and 0000 are also valid A.T.M codes.

Now we have four places to be filled by 0 to 9 that is 10 numbers

Also need to keep in mind that repetition is allowed in this case means if 9 is selected at thousands place than also it is available for hundreds, ones or tens place .  

First digit can be selected in 10 ways that is from 0 to 9.

After selecting first digit, second digit can be selected in 10 ways that is 0 to 9 and same holds true for third and fourth digit.

So number of ways in which four digit number is created = 10 x 10 x 10 x 10 = 10000 ways

Hence 10000 digits can be used for 4 digit A.T.M code.

7 0
3 years ago
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