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Alex777 [14]
2 years ago
15

For items 15-20, Complete the cross number puzzle by determining the common ratio and the missing term of a geometric sequence.

Answer will be written in the puzzle for self checking 16 18 19 20 HE 15 17 1 1 Across: 1 . 15) 10'100' pony 10000 16) 10th term of the sequence -12, 24, -48,... 17) 2, 4, 8, 16, ... az 32 12 own: 18) 750, 150, 30 _ 19) 11, 44, 176, 704. 20) 4, -2, 1, -5 r = 2' 1​

Mathematics
1 answer:
alex41 [277]2 years ago
7 0

Answer:

down:

18 560

19 890

20 u

Step-by-step explanation:

thinking's answer support 100000/1000 your right answer you

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Convert the following equation<br> into slope intercept form.<br> 14x – 7y = 21<br> y = [?]x - [
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Write in expanded form<br>3<br>(-a)​
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3(-a)

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3 years ago
In another state, all license plates consist of from four to six symbols chosen from the 26 letters of the alphabet together wit
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A)
First note that the plates can have between 4 and 6 symbols so we will need to find the number of plates with 4 symbols, 5 symbols and 6 symbols. We add these to get the total. In this part repetition of symbols is allowed. Since there are 26 + 10 =36 possible symbols we look at each position on the plate and think of how many choices there are. We multiply the number f choices using the counting principal since the choices are each independent -- one symbol does not affect another. There are 36 choices for the first symbol, 35 for the second and so on. The number of plates is:
4-symbols = (36)(36)(36)(36)=36^4
5 symbols = (36)^5
6 symbols = 36^6
So the total here is: 36^4+36^5+36^6

B) Here we do not repeat symbols so there are 36 choices for the first symbol but only 35 for the next and 34 for the one after and so on.
4-symbols = (36)(35)(34)(33)
5 symbols = (36)(35)(34)(33)(32)
6 symbols = (36)(35)(34)(33)(32)(31)
So the total here is: (36)(35)(34)(33)+(36)(35)(34)(33)(32)+(36)(35)(34)(33)(32)(31)

c)
In order for there to be a repeated symbol we have 36 choices for the first symbol, 36 for the next and so on. However, for the last symbol we have to pick from one of the ones already selected so there are 3, 4 or 5 choices respectively.
4-symbols = (36)(36)(36)(3)
5 symbols = (36)(36)(36)(36)(4)
6 symbols = (36)(36)(36)(36)(36)(5)
So the total here is: (36^3)(3)+(36^4)(4)+(36^5)(5)

D)
The probability is given by (the number of plates with at least one repeated symbol)/(the total number of plates if repetitions are allowed) = (the answer to c) / (the answer to a)
3 0
3 years ago
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