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Tresset [83]
2 years ago
12

Refer to your Expeditions in Reading book for a complete version of this text.

Mathematics
1 answer:
ahrayia [7]2 years ago
6 0

Answer:

The 3rd one, The 1st one and The last one.

Step-by-step explanation:

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The recursive rule for a sequence is shown.an=an−1+9a1=21 what is the explicit rule for this sequence?
bixtya [17]

Answer:

Meaning of Explicit rule , is the general rule for a sequence.

The given sequence is defined as,

a_{n}=a_{n-1}+9a_{1}-21----(1)

Common Difference(d) of an airthmetic Sequence= N th term - (N-1) th term

                                 =a_{n}-a_{n-1}\\\\=a_{n-1}-a_{n-2}                                            

Equation 1 can be written as,

a_{n}-a_{n-1}=9 a_{1}-21\\\\ d =9a_{1}-21

General rule or explicit rule for this sequence is given as:

a_{n}=a_{1} +(n-1)d\\\\a_{n}=a_{1}+(n-1)(9a_{1}-21)\\\\a_{n}=a_{1}+9na_{1}-21 n-9a_{1}+21\\\\a_{n}=-8a_{1}+21+n(9a_{1}-21)

6 0
3 years ago
a certain state the license plate has two digits, then two letters, and then two digits. How many different license plates are p
xxTIMURxx [149]

Step-by-step explanation:

Choosing 4 digits out of 10 = 10C4 = 210.

Arranging the 4 digits in 4 places = 4!

Total number of ways to arrange digits

= 210 * 4! = 5040.

Choosing 2 letters out of 26 = 26C2 = 325

Arranging the 2 letters in 2 places = 2!

Total number of ways to arrange letters

= 325 * 2! = 650.

Total number of possible license plates

= 5040 * 650 = 3,276,000.

7 0
3 years ago
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Do 1-15 pls and who ever does it will get free v-bucks tonight
Sunny_sXe [5.5K]
These are the answers, if it is blurry I can retake the picture but I hope this helped.

6 0
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What is the range of the function shown on the graph?
never [62]

Answer:

y \in \{\space \mathbb R \space| -6 < y < \infty\}

Step-by-step explanation:

We can see from the graph that y can't be lesser than -6 and y extends unendlessly in the positive direction.

4 0
3 years ago
I need help please, I will give brainliest to the first 2 people
yulyashka [42]

Answer: that should be B !! so sorry if wrong..

Step-by-step explanation:

7 0
3 years ago
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